2014 |
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| 81. | Byung-Kwan Kim; Seong-Ook Park Effects of the Permittivity and Permeability of a Coating Layer on Waveguide Long-Slot Antenna Conference 10th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory, Japan, 2014. @conference{Kim2014c, title = {Effects of the Permittivity and Permeability of a Coating Layer on Waveguide Long-Slot Antenna}, author = {Byung-Kwan Kim and Seong-Ook Park}, year = {2014}, date = {2014-10-01}, booktitle = {10th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 80. | Ki-Beom Kim; Jun-Seuk Suh; Dong-Hun Shin; Seong-Ook Park 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), China, 2014. @conference{Kim2014d, title = {High sensitivity Doppler radar system for detecting respiration and heart rate using improved isolation technique}, author = {Ki-Beom Kim and Jun-Seuk Suh and Dong-Hun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06930091.pdf}, doi = {10.1109/URSIGASS.2014.6930091}, year = {2014}, date = {2014-08-16}, booktitle = {2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)}, address = {China}, abstract = {This study presents a 14 GHz CW Doppler radar to measure respiration and heart rate. An improved antenna isolation technique is used to detect the heart rate of humans for long range detection. Arctangent demodulation without dc offset compensation can be applied because of the heterodyne receiver structure. HRV(heart rate variability) analysis of the radar system and the ECG(electrocardiogram) signal, which is measured directly, are compared. Based on the measurement results, the proposed radar detects the respiration and the heart rate with a small error rate.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This study presents a 14 GHz CW Doppler radar to measure respiration and heart rate. An improved antenna isolation technique is used to detect the heart rate of humans for long range detection. Arctangent demodulation without dc offset compensation can be applied because of the heterodyne receiver structure. HRV(heart rate variability) analysis of the radar system and the ECG(electrocardiogram) signal, which is measured directly, are compared. Based on the measurement results, the proposed radar detects the respiration and the heart rate with a small error rate. |
| 79. | Byung-Kwan Kim; Seong-Ook Park 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), China, 2014. @conference{Kim2014e, title = {Electromagnetic analysis of permeability and permittivity of coated material on waveguide slot antenn}, author = {Byung-Kwan Kim and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06929094.pdf}, doi = {10.1109/URSIGASS.2014.6929094}, year = {2014}, date = {2014-08-16}, booktitle = {2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)}, address = {China}, abstract = {Electromagnetic wave characteristic of slot antenna at rectangular waveguide is discussed in this study. The rectangular waveguide is attached to infinite ground plane, and on the ground plane, one layer of coating exist. Material of coating layer is assumed that has arbitrary permeability, permittivity, thickness, and loss tangent. The aperture field distributions, far-field radiation patterns are extracted from electromagnetic field analysis. To analyze the electromagnetic field, the theory of continuity of the magnetic field is forced boundary condition from the waveguide, through coating layer, to free-space. By forcing boundary equations, the spatial domain and spectrum domain Green's function for internal and external are derived. By based on Green's functions, integral equations are obtained and these integrals are solved by using numerical methods. After solving the equations, the field components are obtained. Aperture electromagnetic field and far-field radiation pattern of the waveguide slot antenna are available using the method of stationary phase.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Electromagnetic wave characteristic of slot antenna at rectangular waveguide is discussed in this study. The rectangular waveguide is attached to infinite ground plane, and on the ground plane, one layer of coating exist. Material of coating layer is assumed that has arbitrary permeability, permittivity, thickness, and loss tangent. The aperture field distributions, far-field radiation patterns are extracted from electromagnetic field analysis. To analyze the electromagnetic field, the theory of continuity of the magnetic field is forced boundary condition from the waveguide, through coating layer, to free-space. By forcing boundary equations, the spatial domain and spectrum domain Green's function for internal and external are derived. By based on Green's functions, integral equations are obtained and these integrals are solved by using numerical methods. After solving the equations, the field components are obtained. Aperture electromagnetic field and far-field radiation pattern of the waveguide slot antenna are available using the method of stationary phase. |
| 78. | Jee-Hoon Lee; Ki-Beom Kim; Seong-Ook Park Long Range Non-invasive Detection of Respiration and Heart Rate using High Sensitivity Radar Conference 2014 Asian Workshop on Antennas and Propagation, Japan, 2014. @conference{Lee2014, title = {Long Range Non-invasive Detection of Respiration and Heart Rate using High Sensitivity Radar}, author = {Jee-Hoon Lee and Ki-Beom Kim and Seong-Ook Park}, year = {2014}, date = {2014-05-01}, booktitle = {2014 Asian Workshop on Antennas and Propagation}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2013 |
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| 77. | Jee-Hoon Lee; Seong-Ook Park A 14 GHz non contact radar system for long range heart rate detection Conference 2013 Proceedings of the International Symposium on Antennas & Propagation, China, 2013. @conference{Lee2013, title = {A 14 GHz non contact radar system for long range heart rate detection}, author = {Jee-Hoon Lee and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06717412.pdf}, year = {2013}, date = {2013-10-23}, booktitle = {2013 Proceedings of the International Symposium on Antennas & Propagation}, address = {China}, abstract = {This study presents a 14 GHz CW Doppler radar to measure respiration and heart rate. A leakage cancellation technique is used to detect the heart rate of humans for long range detection. Arctangent demodulation without dc offset compensation can be applied because of the heterodyne receiver structure and the leakage cancellation technique. HRV analysis of the radar system and the ECG signal, which is measured directly, are compared. Based on the measurement results, the radar can detect respiration and the heart rate with a small error rate.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This study presents a 14 GHz CW Doppler radar to measure respiration and heart rate. A leakage cancellation technique is used to detect the heart rate of humans for long range detection. Arctangent demodulation without dc offset compensation can be applied because of the heterodyne receiver structure and the leakage cancellation technique. HRV analysis of the radar system and the ECG signal, which is measured directly, are compared. Based on the measurement results, the radar can detect respiration and the heart rate with a small error rate. |
| 76. | Dong-Hun Shin; Ki-Beom Kim; Jong-Guk Kim; Seong-Ook Park Design of low side lobe level milimeter-wave microstrip array antenna for automotive radar Conference 2013 Proceedings of the International Symposium on Antennas & Propagation, 2013. @conference{Shin2013, title = {Design of low side lobe level milimeter-wave microstrip array antenna for automotive radar}, author = {Dong-Hun Shin and Ki-Beom Kim and Jong-Guk Kim and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06717564.pdf}, year = {2013}, date = {2013-08-23}, booktitle = {2013 Proceedings of the International Symposium on Antennas & Propagation}, abstract = {A low profile array antenna with a low sidelobe was designed using Taylor array pattern synthesis and null filling concept is adopted using genetic algorithm. The antenna column is consists of 18 element antennas, gap coupled antenna is proposed in this paper to obtain low radiation coefficient and direct coupled antenna is used for high radiation coefficient. 45° polarization is added to reduce the interference. The antenna has 20.8dBi gain and sidelobe level of elevation direction is under -20dB and azimuth direction is under -25dB.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A low profile array antenna with a low sidelobe was designed using Taylor array pattern synthesis and null filling concept is adopted using genetic algorithm. The antenna column is consists of 18 element antennas, gap coupled antenna is proposed in this paper to obtain low radiation coefficient and direct coupled antenna is used for high radiation coefficient. 45° polarization is added to reduce the interference. The antenna has 20.8dBi gain and sidelobe level of elevation direction is under -20dB and azimuth direction is under -25dB. |
2012 |
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| 75. | Ki-Beom Kim; Maifuz Ali; Jee-Hoon Lee; Seong-Ook Park Experimental Study of Propagation Characteristic for Maritime Wireless Communication Conference 2012 International Symposium on Antennas and Propagation (ISAP), Japan, 2012. @conference{Kim2012b, title = {Experimental Study of Propagation Characteristic for Maritime Wireless Communication}, author = {Ki-Beom Kim and Maifuz Ali and Jee-Hoon Lee and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06393826.pdf}, year = {2012}, date = {2012-10-29}, booktitle = {2012 International Symposium on Antennas and Propagation (ISAP)}, address = {Japan}, abstract = {Wireless communication is one of the most important communication system at sea. But insufficient knowledge of radio channel characteristics over sea limits the development of wideband wireless communication systems for maritime applications. In maritime communication, the presence of sea and nearby islands gives rise to multi-path fading. Due to the difficulties to determine base station position for maritime wireless communication and the cost of satellite communications in the marine environment, the analysis of propagation characteristics on coast and sea is very essential for broadband wireless communication. An experimental study on wave propagation in Korea West Sea at 2.58 GHz is presented in this paper. Measurement setup and associated measurement procedure are described in section 2. while kfactor and propagation curve results are analyzed in the sections 3. and 4. respectively.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Wireless communication is one of the most important communication system at sea. But insufficient knowledge of radio channel characteristics over sea limits the development of wideband wireless communication systems for maritime applications. In maritime communication, the presence of sea and nearby islands gives rise to multi-path fading. Due to the difficulties to determine base station position for maritime wireless communication and the cost of satellite communications in the marine environment, the analysis of propagation characteristics on coast and sea is very essential for broadband wireless communication. An experimental study on wave propagation in Korea West Sea at 2.58 GHz is presented in this paper. Measurement setup and associated measurement procedure are described in section 2. while kfactor and propagation curve results are analyzed in the sections 3. and 4. respectively. |
| 74. | Manh-Tuan Dao; Seong-Ook Park Capacity of MIMO System Using Polarimetric Antenna Elements Conference 2012 International Symposium on Antennas and Propagation (ISAP), Japan, 2012. @conference{Dao2012b, title = {Capacity of MIMO System Using Polarimetric Antenna Elements}, author = {Manh-Tuan Dao and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06393923.pdf}, year = {2012}, date = {2012-10-29}, booktitle = {2012 International Symposium on Antennas and Propagation (ISAP)}, address = {Japan}, abstract = {Exploitation of polarization for MIMO system is a promising approach to increase multiple parallel channels, particularly for space-limited mobile and base-stations. For this purpose, the use of polarimetric antenna elements has been studied by both theoretical studies and experiment. The studies, however, present different conclusion on the number of possible independent parallel channels from polarization diversity. In this paper, we study the use of polarimetric antennas under different scattering environments by using a three dimensional (3D) polarized channel modelling in which the Fisher-Bingham (FB5) distribution was used to model direction of scatterers in 3D space. We found that due to a significant correlation between electric and magnetic dipoles, only four independent channels are obtained in fully scattering condition and that in order to achieve full capacity, a certain separation between them is required. Our results can be used for optimisation of array antenna design using polarimetric antenna elements.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Exploitation of polarization for MIMO system is a promising approach to increase multiple parallel channels, particularly for space-limited mobile and base-stations. For this purpose, the use of polarimetric antenna elements has been studied by both theoretical studies and experiment. The studies, however, present different conclusion on the number of possible independent parallel channels from polarization diversity. In this paper, we study the use of polarimetric antennas under different scattering environments by using a three dimensional (3D) polarized channel modelling in which the Fisher-Bingham (FB5) distribution was used to model direction of scatterers in 3D space. We found that due to a significant correlation between electric and magnetic dipoles, only four independent channels are obtained in fully scattering condition and that in order to achieve full capacity, a certain separation between them is required. Our results can be used for optimisation of array antenna design using polarimetric antenna elements. |
| 73. | Byung-Kwan Kim; Seong-Ook Park Electromagnetic Analysis on Arbitrary Material Coated Slot Antenna Conference 2012 IEEE International Symposium on antenna and propagation and USNC/URSI National Radio Meeting, U.S., 2012. @conference{Kim2012c, title = {Electromagnetic Analysis on Arbitrary Material Coated Slot Antenna}, author = {Byung-Kwan Kim and Seong-Ook Park}, year = {2012}, date = {2012-07-08}, booktitle = {2012 IEEE International Symposium on antenna and propagation and USNC/URSI National Radio Meeting}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2011 |
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| 72. | Maifuz Ali; Seong-Ook Park GTD Analysis of Dual-Polarised Parabolic Cylindrical Reflector Antennas with Dipole Feeds Conference 2011 International Symposium on Antennas and Propagation, Korea, 2011. @conference{Ali2011d, title = {GTD Analysis of Dual-Polarised Parabolic Cylindrical Reflector Antennas with Dipole Feeds}, author = {Maifuz Ali and Seong-Ook Park}, year = {2011}, date = {2011-10-25}, booktitle = {2011 International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 71. | Dong-Hun Shin; Seong-Ook Park FMCW Radar with Enhanced Frequency Estimation Conference 2011 International Symposium on Antennas and Propagation, Korea, 2011. @conference{Shin2011b, title = {FMCW Radar with Enhanced Frequency Estimation}, author = {Dong-Hun Shin and Seong-Ook Park}, year = {2011}, date = {2011-10-25}, booktitle = {2011 International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 70. | Manh-Tuan Dao; Seong-Ook Park 3D Channel Model for MIMO Polarized Antennas Conference 2011 International Symposium on Antennas and Propagation, Korea, 2011. @conference{Dao2011b, title = {3D Channel Model for MIMO Polarized Antennas}, author = {Manh-Tuan Dao and Seong-Ook Park}, year = {2011}, date = {2011-10-25}, booktitle = {2011 International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 69. | Myung-Hun Jeong; Byeong-Yong Park; Jung-Hwan Choi; Seong-Ook Park Doppler Spread Spectrum by a Moving Receiver in a Reverberation Chamber Conference 2011 International Symposium on Antennas and Propagation, Korea, 2011. @conference{Jeong2011, title = {Doppler Spread Spectrum by a Moving Receiver in a Reverberation Chamber}, author = {Myung-Hun Jeong and Byeong-Yong Park and Jung-Hwan Choi and Seong-Ook Park}, year = {2011}, date = {2011-10-25}, booktitle = {2011 International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 68. | Dong-Hun Shin; Seong-Ook Park Design of X-band FMCW short range radar Conference 2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals, Korea, 2011. @conference{Shin2011, title = {Design of X-band FMCW short range radar}, author = {Dong-Hun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06027214.pdf}, year = {2011}, date = {2011-08-24}, booktitle = {2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals}, address = {Korea}, abstract = {This paper researches on a X-band FMCW short range radar. It has 160us sweep time and 600MHz bandwidth. The gain variable amplifier is used to remove the internal noise and compensate the path-loss. Range resolution is 25cm and measurement data has less than 17cm error.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper researches on a X-band FMCW short range radar. It has 160us sweep time and 600MHz bandwidth. The gain variable amplifier is used to remove the internal noise and compensate the path-loss. Range resolution is 25cm and measurement data has less than 17cm error. |
| 67. | Yun-Taek Im; Jee-Hoon Lee; Seong-Ook Park A DDS and PLL-based X-band FMCW radar system Conference 2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals, Korea, 2011. @conference{Im2011, title = {A DDS and PLL-based X-band FMCW radar system}, author = {Yun-Taek Im and Jee-Hoon Lee and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06027213.pdf}, year = {2011}, date = {2011-08-24}, booktitle = {2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals}, address = {Korea}, abstract = {A DDS and PLL-based FMCW range meter system is described. The DDS is used as a reference clock of a linearly frequency modulated signal source, and the PLL is controlled by it. The bandwidth and the sweep time of the FMCW radar system are 150 MHz, and 270 us. Zero-padding and spectral centroid processing techniques are used to measure a target range, and the range resolution is less than 0.25 m.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A DDS and PLL-based FMCW range meter system is described. The DDS is used as a reference clock of a linearly frequency modulated signal source, and the PLL is controlled by it. The bandwidth and the sweep time of the FMCW radar system are 150 MHz, and 270 us. Zero-padding and spectral centroid processing techniques are used to measure a target range, and the range resolution is less than 0.25 m. |
| 66. | Maifuz Ali; Seong-Ook Park Pyramidal horn antenna gain calculations in receiving mode using FDTD technique Conference 2011 URSI General Assembly and Scientific Symposium, Turkey 2011. @conference{Ali2011c, title = {Pyramidal horn antenna gain calculations in receiving mode using FDTD technique}, author = {Maifuz Ali and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/06050472.pdf}, doi = {10.1109/URSIGASS.2011.6050472}, year = {2011}, date = {2011-08-13}, booktitle = {2011 URSI General Assembly and Scientific Symposium}, organization = {Turkey}, abstract = {A few widely used incident wave models for pyramidal horn antenna analysis are compared on the basis of gain computations. The finite-difference time-domain (FDTD) technique is applied to compute the gain of horn antennas in this receiving mode. The computed gains are compared with published measured results. The computed results agree well with the measurement for high-gain horn and also for lower gain horn.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A few widely used incident wave models for pyramidal horn antenna analysis are compared on the basis of gain computations. The finite-difference time-domain (FDTD) technique is applied to compute the gain of horn antennas in this receiving mode. The computed gains are compared with published measured results. The computed results agree well with the measurement for high-gain horn and also for lower gain horn. |
| 65. | Jee-Hoon Lee; Yun-Taek Im; Seong-Ook Park X-band Radar System for Detecting Heart and Respiration Rates Conference 2011 Asia-Pacific EMC Symposium, Jeju, Korea, 2011. @conference{Lee2011, title = { X-band Radar System for Detecting Heart and Respiration Rates}, author = {Jee-Hoon Lee and Yun-Taek Im and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/734b-1.pdf}, year = {2011}, date = {2011-05-16}, booktitle = {2011 Asia-Pacific EMC Symposium}, address = {Jeju, Korea}, abstract = {This paper proposes an X-band Doppler radar system to detect heart and respiration of human far away. Through the idea of a reverse sense of rotation when the reflecting surface is perfectly conducting, it is shown that the detecting property of the system can be effectively improved by using antennas that have a reverse polarization. This bistatic radar system can be used in non-invasively sensing bio signals such as respiration and heart rates with the periodic movement of skin and muscle near the heart. }, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper proposes an X-band Doppler radar system to detect heart and respiration of human far away. Through the idea of a reverse sense of rotation when the reflecting surface is perfectly conducting, it is shown that the detecting property of the system can be effectively improved by using antennas that have a reverse polarization. This bistatic radar system can be used in non-invasively sensing bio signals such as respiration and heart rates with the periodic movement of skin and muscle near the heart. |
2010 |
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| 64. | Dong-Uk Sim; Jong-Hwa Kwon; Sang-Il Kwak; Hyung-Do Choi; Seong-Ook Park Design of a Resonant Microwave Absorber Conference International Symposium on Antennas and Propagation, Macao, 2010. @conference{Sim2010, title = {Design of a Resonant Microwave Absorber}, author = {Dong-Uk Sim and Jong-Hwa Kwon and Sang-Il Kwak and Hyung-Do Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/73.pdf}, year = {2010}, date = {2010-11-23}, booktitle = { International Symposium on Antennas and Propagation}, address = {Macao}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 63. | Sang-Ik Lee; Byeong-Yong Park; Soon-Gyu Yi; Seong-Ook Park Optimization of STC for Collecting Terrain Information Conference International Symposium on Antennas and Propagation, Macao, 2010. @conference{Lee2010, title = {Optimization of STC for Collecting Terrain Information}, author = {Sang-Ik Lee and Byeong-Yong Park and Soon-Gyu Yi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/33.pdf}, year = {2010}, date = {2010-11-23}, booktitle = {International Symposium on Antennas and Propagation}, address = {Macao}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 62. | Soon-Gyu Yi; Ki-Bok Kong; Jung-Hwan Choi; Seong-Ook Park Efficient Modeling of a Small Reverberation Chamber Using FDTD Method Conference International Symposium on Antennas and Propagation, Macao, 2010. @conference{Yi2010, title = {Efficient Modeling of a Small Reverberation Chamber Using FDTD Method}, author = {Soon-Gyu Yi and Ki-Bok Kong and Jung-Hwan Choi and Seong-Ook Park}, year = {2010}, date = {2010-11-23}, booktitle = {International Symposium on Antennas and Propagation}, address = {Macao}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2009 |
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| 61. | Byeong-Yong Park; Jung-Hwan Choi; Seong-Ook Park Design and Analysis of LTE MIMO Handset Antenna with Enhanced Isolation using Decoupling Technique Conference International Symposium on Antennas and Propagation, Thailand, 2009. @conference{Park2009, title = {Design and Analysis of LTE MIMO Handset Antenna with Enhanced Isolation using Decoupling Technique}, author = {Byeong-Yong Park and Jung-Hwan Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/1077.pdf}, year = {2009}, date = {2009-10-20}, booktitle = {International Symposium on Antennas and Propagation}, address = {Thailand}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 60. | Myung-Hun Jeong; Jung-Hwan Choi; Ki-Bok Kong; Seong-Ook Park A Non-uniform One-Arm Spiral Antenna for WBAN Communication Conference 2009 IEEE Antennas and Propagation Society International Symposium, U.S., 2009. @conference{Jeong2009, title = {A Non-uniform One-Arm Spiral Antenna for WBAN Communication}, author = {Myung-Hun Jeong and Jung-Hwan Choi and Ki-Bok Kong and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/05172287.pdf}, doi = {10.1109/APS.2009.5172287}, year = {2009}, date = {2009-06-01}, booktitle = {2009 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {In this paper, a novel non-uniform spiral antenna for WBAN (wireless body area network) communication is proposed and investigated. The resonating frequency is 280 MHz and the bandwidth can be achieved with 110 MHz. The diameter of the proposed antenna is 10 mm and the height is 1.035 mm. The measured maximum gain is -12.404 dBi at 310 MHz. Details of the proposed design are described and the measured results are presented.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, a novel non-uniform spiral antenna for WBAN (wireless body area network) communication is proposed and investigated. The resonating frequency is 280 MHz and the bandwidth can be achieved with 110 MHz. The diameter of the proposed antenna is 10 mm and the height is 1.035 mm. The measured maximum gain is -12.404 dBi at 310 MHz. Details of the proposed design are described and the measured results are presented. |
| 59. | Rashid Ahmad Bhatti; Byeong-Yong Park; Jung-Hwan Choi; Seong-Ook Park Printed Antenna Array for Multiband MIMO-Enabled Portable Wireless Communications Terminals Conference International Symposium on Antenna and Propagation, 2009. @conference{Bhatti2009c, title = {Printed Antenna Array for Multiband MIMO-Enabled Portable Wireless Communications Terminals}, author = {Rashid Ahmad Bhatti and Byeong-Yong Park and Jung-Hwan Choi and Seong-Ook Park}, year = {2009}, date = {2009-06-01}, booktitle = {International Symposium on Antenna and Propagation}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 58. | Jung-Hwan Choi; Byeong-Yong Park; Seong-Ook Park Estimation of Direction of Arrival Using the Modulated Scattering Technique Conference Progress in Electromagnetics Research Symposium, China, 2009. @conference{Choi2009b, title = {Estimation of Direction of Arrival Using the Modulated Scattering Technique}, author = {Jung-Hwan Choi and Byeong-Yong Park and Seong-Ook Park}, year = {2009}, date = {2009-05-23}, booktitle = {Progress in Electromagnetics Research Symposium}, address = {China}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2008 |
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| 57. | Jee-Hoon Lee; Yun-Taek Im; Seong-Ook Park Doppler Radar Sensing System of Respiration and Heart Rate Conference 2008 8th International Symposium on Antennas, Propagation and EM Theory, 2008. @conference{Lee2008, title = {Doppler Radar Sensing System of Respiration and Heart Rate}, author = {Jee-Hoon Lee and Yun-Taek Im and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04735312.pdf}, doi = {10.1109/ISAPE.2008.4735312}, year = {2008}, date = {2008-11-02}, booktitle = {2008 8th International Symposium on Antennas, Propagation and EM Theory}, abstract = {In this paper, Doppler radar system is designed, which is composed of oscillator, mixer, LNA, and antennas. The idea of this paper is using reverse circular polarization for bio-detection Doppler radar to selectively receive signals reflected from highly conductive body surfaces. To improve isolation property between transmitter and receiver, we use the bistatic system using LHCP and RHCP antennas. The budget of system is analyzed and the experimental results are discussed.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, Doppler radar system is designed, which is composed of oscillator, mixer, LNA, and antennas. The idea of this paper is using reverse circular polarization for bio-detection Doppler radar to selectively receive signals reflected from highly conductive body surfaces. To improve isolation property between transmitter and receiver, we use the bistatic system using LHCP and RHCP antennas. The budget of system is analyzed and the experimental results are discussed. |
| 56. | Manh-Tuan Dao; Jung-Hwan Choi; Seong-Ook Park Investigation of MIMO system in Reverberation Chamber Conference International Symposium on Antennas, Propagation and EM Theory, China, 2008. @conference{Dao2008, title = {Investigation of MIMO system in Reverberation Chamber}, author = {Manh-Tuan Dao and Jung-Hwan Choi and Seong-Ook Park}, year = {2008}, date = {2008-11-02}, booktitle = {International Symposium on Antennas, Propagation and EM Theory}, address = {China}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 55. | Byung-Chan Kim; Seong-Ook Park; Se-Keun Oh Ultra Wideband Built-in Antenna with Novel EM Coupling Feed for Mobile Phones Conference International Symposium on Antennas and Propagation, Taiwan, 2008. @conference{Kim2008b, title = {Ultra Wideband Built-in Antenna with Novel EM Coupling Feed for Mobile Phones}, author = {Byung-Chan Kim and Seong-Ook Park and Se-Keun Oh}, year = {2008}, date = {2008-10-27}, booktitle = {International Symposium on Antennas and Propagation}, address = {Taiwan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 54. | Manh-Tuan Dao; Seong-Ook Park Derivation and analysis of spatial correlation with respect to polarization and pattern Conference International Symposium on Antennas and Propagation, 2008. @conference{Dao2008b, title = {Derivation and analysis of spatial correlation with respect to polarization and pattern}, author = {Manh-Tuan Dao and Seong-Ook Park}, year = {2008}, date = {2008-10-27}, booktitle = {International Symposium on Antennas and Propagation}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 53. | Min-Goo Choi; Sung-Ho Chae; Byung-Tae Yun; Seong-Ook Park Validity of Kronecker model at 3.805 GHz Indoor measurement 4 by 4 MIMO system Conference IEEE Antenna and Propagation Symposium, U.S., 2008. @conference{Choi2008, title = {Validity of Kronecker model at 3.805 GHz Indoor measurement 4 by 4 MIMO system}, author = {Min-Goo Choi and Sung-Ho Chae and Byung-Tae Yun and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/a6d73a0.pdf}, year = {2008}, date = {2008-07-05}, booktitle = { IEEE Antenna and Propagation Symposium}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 52. | Rashid Ahmad Bhatti; Min-Goo Choi; Jung-Hwan Choi; Seong-Ook Park Design and Evaluation of a PIFA Array for MIMO-Enabled Portable Wireless Communication Devices Conference IEEE Antenna and Propagation Symposium, U.S., 2008. @conference{Bhatti2008b, title = {Design and Evaluation of a PIFA Array for MIMO-Enabled Portable Wireless Communication Devices}, author = {Rashid Ahmad Bhatti and Min-Goo Choi and Jung-Hwan Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/3213s.pdf}, year = {2008}, date = {2008-07-05}, booktitle = {IEEE Antenna and Propagation Symposium}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 51. | Jung-Hwan Choi; Yong-Sun Shin; Won-Il Kwak; Ki-Bok Kong; Seong-Ook Park IEEE Antenna and Propagation Symposium, U.S., 2008. @conference{Choi2008b, title = {Experimental Investigation of 2x2 MIMO Array Antenna for the Mobile WiMax by Measuring 3D Radiation Patterns}, author = {Jung-Hwan Choi and Yong-Sun Shin and Won-Il Kwak and Ki-Bok Kong and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/3214.pdf}, year = {2008}, date = {2008-07-05}, booktitle = { IEEE Antenna and Propagation Symposium}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 50. | Yong-Sun Shin; Seong-Ook Park A chip antenna with magneto-dielectric material Conference IEEE Antennas and Propagation Society International Symposium, 2008. @conference{Shin2008, title = {A chip antenna with magneto-dielectric material}, author = {Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04619911.pdf}, doi = {10.1109/APS.2008.4619911}, year = {2008}, date = {2008-07-05}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, abstract = {This paper presents a chip antenna with the magneto-dielectric material. The proposed antenna with a supporter has a compact dimension of 9.5 times 3 times 1 mm3. The bandwidth is 875 MHz which range is from 3 GHz to 3.875 GHz at S11 Lt - 10dB and the maximum gain is 4.92dBi at 3.74GHz. In this case, the magneto dielectric material is not perfect because the real value of the complex permeability is not higher than one. So, in the near future, we will try to manufacture again and then apply to the antenna which covers other frequency band.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents a chip antenna with the magneto-dielectric material. The proposed antenna with a supporter has a compact dimension of 9.5 times 3 times 1 mm3. The bandwidth is 875 MHz which range is from 3 GHz to 3.875 GHz at S11 Lt - 10dB and the maximum gain is 4.92dBi at 3.74GHz. In this case, the magneto dielectric material is not perfect because the real value of the complex permeability is not higher than one. So, in the near future, we will try to manufacture again and then apply to the antenna which covers other frequency band. |
| 49. | Rashid Ahmad Bhatti; Yong-Sun Shin; Ngoc-Anh Nguyen; Seong-Ook Park Design of a Novel Multiband Planar Inverted-F Antenna for Mobile Terminals Conference 2008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, Japan, 2008. @conference{Bhatti2008c, title = {Design of a Novel Multiband Planar Inverted-F Antenna for Mobile Terminals}, author = {Rashid Ahmad Bhatti and Yong-Sun Shin and Ngoc-Anh Nguyen and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04511394.pdf}, doi = {10.1109/IWAT.2008.4511394}, year = {2008}, date = {2008-03-04}, booktitle = {2008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials}, address = {Japan}, abstract = {In this paper, we propose a PIFA based multiband internal antenna that can support seven frequency bands. The antenna is designed to operate at GSM (Global System for Mobile Communications, 880-980 MHz), PCS (Personal Communication Services, 1880-1990 MHz), UMTS (Universal Mobile Telecommunications System, 1.9-2.17 GHz), WiBro (2300-2390 MHz), Bluetooth (2.4-2.48 GHz), S-DMB (Satellite-Digital Multimedia Broadcasting, 2.630 ~ 2.655 GHz) and WLAN (Wireless Local Area Network, 5.16 ~ 5.5 GHz) frequency bands. Multiple frequency bands have been realized by using slots and quarter-wave length resonating strips. A matching stub and multiple short circuiting strips are utilized for improving impedance matching across the targeted frequency bands. A prototype antenna is fabricated and characterized by measuring return loss and radiation patterns. Comparison of the measured and simulated results is given in the paper.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, we propose a PIFA based multiband internal antenna that can support seven frequency bands. The antenna is designed to operate at GSM (Global System for Mobile Communications, 880-980 MHz), PCS (Personal Communication Services, 1880-1990 MHz), UMTS (Universal Mobile Telecommunications System, 1.9-2.17 GHz), WiBro (2300-2390 MHz), Bluetooth (2.4-2.48 GHz), S-DMB (Satellite-Digital Multimedia Broadcasting, 2.630 ~ 2.655 GHz) and WLAN (Wireless Local Area Network, 5.16 ~ 5.5 GHz) frequency bands. Multiple frequency bands have been realized by using slots and quarter-wave length resonating strips. A matching stub and multiple short circuiting strips are utilized for improving impedance matching across the targeted frequency bands. A prototype antenna is fabricated and characterized by measuring return loss and radiation patterns. Comparison of the measured and simulated results is given in the paper. |
| 48. | Viet-Anh Nguyen; Seong-Ook Park Compact Tunable-PIFA Antenna for Multiband Slim Handsets Conference 008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, Japan, 2008. @conference{Nguyen2008c, title = {Compact Tunable-PIFA Antenna for Multiband Slim Handsets}, author = {Viet-Anh Nguyen and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04511355.pdf}, doi = {10.1109/IWAT.2008.4511355}, year = {2008}, date = {2008-03-04}, booktitle = {008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 47. | Ngoc-Anh Nguyen; Seong-Ook Park A Harmonic Suppression Antenna using T-shaped Wide Slot Conference International Workshop on Antenna Technology, Japan, 2008. @conference{Nguyen2008d, title = {A Harmonic Suppression Antenna using T-shaped Wide Slot}, author = {Ngoc-Anh Nguyen and Seong-Ook Park}, year = {2008}, date = {2008-03-04}, booktitle = {International Workshop on Antenna Technology}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2007 |
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| 46. | Rashid Ahmad Bhatti; Ngoc-Anh Nguyen; Viet-Anh Nguyen; Seong-Ook Park Design of a Compact Internal Antenna for Multi-Band Personal Communication Handsets Conference 2007 Asia-Pacific Microwave Conference, 2007. @conference{Bhatti2007b, title = {Design of a Compact Internal Antenna for Multi-Band Personal Communication Handsets}, author = {Rashid Ahmad Bhatti and Ngoc-Anh Nguyen and Viet-Anh Nguyen and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04554918.pdf}, doi = {10.1109/APMC.2007.4554918}, year = {2007}, date = {2007-12-11}, booktitle = {2007 Asia-Pacific Microwave Conference}, abstract = {In this paper, we propose a compact internal antenna for modern slim personal communication handsets that require reduced height multi-band antennas for location independent operation. The antenna operates at DCS, PCS, UMTS, WiBro, ISM/Bluetooth and WLAN (5.17 - 5.85 GHz) standards. Measured return loss of the antenna is better than -10 dB with acceptable radiation performance at all the targeted frequency bands. Height of the antenna is 4.0 mm resulting in a total volume of 1.5 cm3 that makes it attractive for modern slim personal communication handsets.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, we propose a compact internal antenna for modern slim personal communication handsets that require reduced height multi-band antennas for location independent operation. The antenna operates at DCS, PCS, UMTS, WiBro, ISM/Bluetooth and WLAN (5.17 - 5.85 GHz) standards. Measured return loss of the antenna is better than -10 dB with acceptable radiation performance at all the targeted frequency bands. Height of the antenna is 4.0 mm resulting in a total volume of 1.5 cm3 that makes it attractive for modern slim personal communication handsets. |
| 45. | Rashid Ahmad Bhatti; Hyeong-Sik Yoon; Seong-Ook Park Design of a novel multiband internal antenna for personal communication handsets Conference TENCON 2007 - 2007 IEEE Region 10 Conference, Taiwan, 2007. @conference{Bhatti2007d, title = {Design of a novel multiband internal antenna for personal communication handsets}, author = {Rashid Ahmad Bhatti and Hyeong-Sik Yoon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04429035.pdf}, doi = {10.1109/TENCON.2007.4429035}, year = {2007}, date = {2007-10-30}, booktitle = {TENCON 2007 - 2007 IEEE Region 10 Conference}, address = {Taiwan}, abstract = {Modern personal communication handsets are required to operate at multiple frequency bands for location independent operation and enhanced functionality. This poses an important challenge for antenna designers to build multiband antennas within the limited allowable space. In this paper, a compact PIFA based internal antenna is proposed for GPS, DCS, PCS, UMTS, WiBro, ISM/Bluetooth and WLAN standards. Measured VSWR of the antenna is within the acceptable limit over all the frequency bands with reasonable radiation performance. Height of the antenna is 4.0 mm resulting in a total volume of 2.4 cm3 that makes it attractive for modern slim personal communication handsets.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Modern personal communication handsets are required to operate at multiple frequency bands for location independent operation and enhanced functionality. This poses an important challenge for antenna designers to build multiband antennas within the limited allowable space. In this paper, a compact PIFA based internal antenna is proposed for GPS, DCS, PCS, UMTS, WiBro, ISM/Bluetooth and WLAN standards. Measured VSWR of the antenna is within the acceptable limit over all the frequency bands with reasonable radiation performance. Height of the antenna is 4.0 mm resulting in a total volume of 2.4 cm3 that makes it attractive for modern slim personal communication handsets. |
| 44. | Sung-Ho Chae; Min-Goo Choi; Seong-Ook Park The realization of pattern/polarization diversity by applying vertical excitation Conference TENCON 2007 - 2007 IEEE Region 10 Conference, Taiwan, 2007. @conference{Chae2007b, title = {The realization of pattern/polarization diversity by applying vertical excitation}, author = {Sung-Ho Chae and Min-Goo Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04428991.pdf}, doi = {10.1109/TENCON.2007.4428991}, year = {2007}, date = {2007-10-30}, booktitle = {TENCON 2007 - 2007 IEEE Region 10 Conference}, address = {Taiwan}, abstract = {This paper proposes the pattern/polarization diversity array for MIMO applications by applying vertical excitation. We show that antenna's pattern and polarization characteristics are changed due to vertical feeding. Then, we attempt to realize the two antenna diversity array by using different feeding method. In addition, the spatial correlations of different excitations are investigated. Finally, the analysis of the diversity system in the view point of capacity is presented.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper proposes the pattern/polarization diversity array for MIMO applications by applying vertical excitation. We show that antenna's pattern and polarization characteristics are changed due to vertical feeding. Then, we attempt to realize the two antenna diversity array by using different feeding method. In addition, the spatial correlations of different excitations are investigated. Finally, the analysis of the diversity system in the view point of capacity is presented. |
| 43. | Yong-Sun Shin; Seong-Ook Park A novel compact PIFA for wireless communication applications Conference TENCON 2007 - 2007 IEEE Region 10 Conference, Taiwan, 2007. @conference{Shin2007d, title = {A novel compact PIFA for wireless communication applications}, author = {Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04428929.pdf}, doi = {10.1109/TENCON.2007.4428929}, year = {2007}, date = {2007-10-30}, booktitle = {TENCON 2007 - 2007 IEEE Region 10 Conference}, address = {Taiwan}, abstract = {A compact PIFA for Bluetooth, S-DMB, Wibro, WiMax, and WLAN applications is introduced. The proposed antenna is fed by a coaxial connector and has the modified shorting plate structure for the enhanced bandwidth at the low band. The bandwidth is 19.4% (2.28-2.77 GHz) and 47.7% (4.04-6.57 GHz) at VSWR < 2.5 and the measured maximum gain is 4.95 dBi at 6.3 GHz. Details of the antenna design and experimental results are demonstrated.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A compact PIFA for Bluetooth, S-DMB, Wibro, WiMax, and WLAN applications is introduced. The proposed antenna is fed by a coaxial connector and has the modified shorting plate structure for the enhanced bandwidth at the low band. The bandwidth is 19.4% (2.28-2.77 GHz) and 47.7% (4.04-6.57 GHz) at VSWR < 2.5 and the measured maximum gain is 4.95 dBi at 6.3 GHz. Details of the antenna design and experimental results are demonstrated. |
| 42. | Rashid Ahmad Bhatti; Hyung-Sik Yoon; Seong-Ook Park Design of a Compact Internal Multiband Antenna for Mobile Phones and WLAN Applications Conference International Symposium on Antennas and Propagation, Japan, 2007. @conference{Bhatti2007c, title = {Design of a Compact Internal Multiband Antenna for Mobile Phones and WLAN Applications }, author = {Rashid Ahmad Bhatti and Hyung-Sik Yoon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/2A1-3.pdf}, year = {2007}, date = {2007-08-20}, booktitle = {International Symposium on Antennas and Propagation}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 41. | Sung-Ho Chae; Min-Goo Choi; Seong-Ook Park The realization and analysis of polarization diversity in WiBro MIMO antenna Conference 2007 IEEE Antennas and Propagation Society International Symposium, U.S., 2007. @conference{Chae2007c, title = {The realization and analysis of polarization diversity in WiBro MIMO antenna}, author = {Sung-Ho Chae and Min-Goo Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04396018.pdf}, doi = {10.1109/APS.2007.4396018}, year = {2007}, date = {2007-06-09}, booktitle = {2007 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {Multi-input multi-output (MIMO) communication systems have received a great attention because it increases the channel capacity by using multiple transmitter and receiver (G.J.Foschini and M.J.Gans). However, the spatial correlation between antennas causes the loss of spectral efficiency. To reduce the spatial correlation, the space, polarization, and pattern diversity techniques are most widely used. The polarization of PIFA can be changed by different feed ports (Y.Liu, et al). By using techniques of vertical and horizontal feeding, this paper proposed polarization diversity system by two array antenna which can apply wireless broadband (WiBro) application in US and Canada. Also, the analysis of the polarization diversity in the view point of capacity is presented. The CST micro wave studio(MWS) is employed to simulate the scattering parameters and radiation patterns in this paper.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Multi-input multi-output (MIMO) communication systems have received a great attention because it increases the channel capacity by using multiple transmitter and receiver (G.J.Foschini and M.J.Gans). However, the spatial correlation between antennas causes the loss of spectral efficiency. To reduce the spatial correlation, the space, polarization, and pattern diversity techniques are most widely used. The polarization of PIFA can be changed by different feed ports (Y.Liu, et al). By using techniques of vertical and horizontal feeding, this paper proposed polarization diversity system by two array antenna which can apply wireless broadband (WiBro) application in US and Canada. Also, the analysis of the polarization diversity in the view point of capacity is presented. The CST micro wave studio(MWS) is employed to simulate the scattering parameters and radiation patterns in this paper. |
| 40. | Yong-Sun Shin; Seong-Ook Park A novel PIFA for 2.4 and 5 GHz WLAN application Conference 2007 IEEE Antennas and Propagation Society International Symposium, U.S., 2007. @conference{Shin2007e, title = {A novel PIFA for 2.4 and 5 GHz WLAN application}, author = {Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04395576.pdf}, doi = {10.1109/APS.2007.4395576}, year = {2007}, date = {2007-06-09}, booktitle = {2007 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper demonstrates a novel planar inverted-F antenna (PIFA) for 2.4/5 GHz Bluetooth and WLAN bands. The size of the proposed antenna is 24.3 times 7.5 times 5 mm3 and the bandwidth is about 190 MHz and 1850 MHz at 2.4/5 GHz Bluetooth and WLAN bands, respectively. Results show that PIFA has relatively broader impedance bandwidths covering the 2.4 GHz (2.3-2.49 GHz) and 5 GHz (5.15-7 GHz) bands at S11< -10 dB and the measured maximum gain is 4.47 dBi at 5.25 GHz.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper demonstrates a novel planar inverted-F antenna (PIFA) for 2.4/5 GHz Bluetooth and WLAN bands. The size of the proposed antenna is 24.3 times 7.5 times 5 mm3 and the bandwidth is about 190 MHz and 1850 MHz at 2.4/5 GHz Bluetooth and WLAN bands, respectively. Results show that PIFA has relatively broader impedance bandwidths covering the 2.4 GHz (2.3-2.49 GHz) and 5 GHz (5.15-7 GHz) bands at S11< -10 dB and the measured maximum gain is 4.47 dBi at 5.25 GHz. |
| 39. | Hyeong-Sik Yoon; Seong-Ook Park A dual-band internal antenna of PIFA type for bluetooth/WLAN in mobile handsets Conference 2007 IEEE Antennas and Propagation Society International Symposium, 2007. @conference{Yoon2007b, title = {A dual-band internal antenna of PIFA type for bluetooth/WLAN in mobile handsets}, author = {Hyeong-Sik Yoon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04395581.pdf}, doi = {10.1109/APS.2007.4395581}, year = {2007}, date = {2007-06-09}, booktitle = {2007 IEEE Antennas and Propagation Society International Symposium}, abstract = {In this paper, a novel internal antenna of the planar inverted-F antenna type for mobile handsets is presented (Manteuffel et al., 2001). The proposed antenna operates at Bluetooth (2400-2483.5 MHz) bands and WLAN (2400-2483.5 MHz, 5150- 5875 MHz) bands. The bandwidth of the proposed antenna (VSWR < 2) shows 170 MHz in lower band and 1650 MHz in upper band. The proposed antenna can be applicable to practical mobile handsets because of its small size and low profile (Wang et al., 2001). The experimental result of the proposed antenna is compared with the simulation result to evaluate our proposed antenna design.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, a novel internal antenna of the planar inverted-F antenna type for mobile handsets is presented (Manteuffel et al., 2001). The proposed antenna operates at Bluetooth (2400-2483.5 MHz) bands and WLAN (2400-2483.5 MHz, 5150- 5875 MHz) bands. The bandwidth of the proposed antenna (VSWR < 2) shows 170 MHz in lower band and 1650 MHz in upper band. The proposed antenna can be applicable to practical mobile handsets because of its small size and low profile (Wang et al., 2001). The experimental result of the proposed antenna is compared with the simulation result to evaluate our proposed antenna design. |
2006 |
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| 38. | Dong-Hyuk Choi; Seong-Ook Park Dual-band and dual-polarization patch antenna with high isolation characteristic Conference 2006 Asia-Pacific Microwave Conference, Japan, 2006. @conference{Choi2006, title = {Dual-band and dual-polarization patch antenna with high isolation characteristic}, author = {Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04429805.pdf}, doi = {10.1109/APMC.2006.4429805}, year = {2006}, date = {2006-12-15}, booktitle = {2006 Asia-Pacific Microwave Conference}, address = {Japan}, abstract = {A patch antenna with dual-band and dual-polarization operation is proposed and discussed. For feeding the antenna, it is used the electromagnetically coupled microstrip-T junction and coplanar waveguide (CPW)-line. Since both ports of the antenna are electromagnetically coupled, the proposed antenna eliminates the need for capacitors in the RF path for active antenna applications. By using CPW resonant cell, the demonstrated approach results in a significant improvement in port isolation.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A patch antenna with dual-band and dual-polarization operation is proposed and discussed. For feeding the antenna, it is used the electromagnetically coupled microstrip-T junction and coplanar waveguide (CPW)-line. Since both ports of the antenna are electromagnetically coupled, the proposed antenna eliminates the need for capacitors in the RF path for active antenna applications. By using CPW resonant cell, the demonstrated approach results in a significant improvement in port isolation. |
| 37. | Sung-Ho Chae; Won-Il Kwak; Seong-Ook Park Analysis of mutual coupling in MIMO antenna array by TARC calculation Conference 2006 Asia-Pacific Microwave Conference, Japan, 2006. @conference{Chae2006, title = {Analysis of mutual coupling in MIMO antenna array by TARC calculation}, author = {Sung-Ho Chae and Won-Il Kwak and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04429825.pdf}, doi = {10.1109/APMC.2006.4429825}, year = {2006}, date = {2006-12-15}, booktitle = {2006 Asia-Pacific Microwave Conference}, address = {Japan}, abstract = {Mutual coupling is the one of the most important factor evaluating the performance of multiple input multiple output (MIMO) antennas. This paper presents the mutual coupling analysis by calculating total active reflection coefficient (TARC). PIFA is used for antenna arrays because of its low profile, good radiation characteristic, and robust of nearby antennas. We show that antenna spacing, antenna radiation pattern, and the number of antenna elements are more significantly considering factors in MIMO arrays. This paper demonstrates the optimized antenna elements allocation.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Mutual coupling is the one of the most important factor evaluating the performance of multiple input multiple output (MIMO) antennas. This paper presents the mutual coupling analysis by calculating total active reflection coefficient (TARC). PIFA is used for antenna arrays because of its low profile, good radiation characteristic, and robust of nearby antennas. We show that antenna spacing, antenna radiation pattern, and the number of antenna elements are more significantly considering factors in MIMO arrays. This paper demonstrates the optimized antenna elements allocation. |
| 36. | Sung-Ho Chae; Se-Keun Oh; Seong-Ook Park Analysis of Mutual coupling, correlations, and TARC in MIMO antenna array Conference International Symposium on Antennas and Propagation, Singapore, 2006. @conference{Chae2006b, title = {Analysis of Mutual coupling, correlations, and TARC in MIMO antenna array}, author = {Sung-Ho Chae and Se-Keun Oh and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/3213y.pdf}, year = {2006}, date = {2006-11-04}, booktitle = {International Symposium on Antennas and Propagation}, address = {Singapore}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 35. | Se-Keun Oh; Yong-Sun Shin; Seong-Ook Park A small sized tunable antenna with using modified U-slot PIFA Conference International Symposium on Antennas and Propagation, Singapore, 2006. @conference{Oh2006, title = {A small sized tunable antenna with using modified U-slot PIFA}, author = {Se-Keun Oh and Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/1POS-16.pdf}, year = {2006}, date = {2006-11-04}, booktitle = {International Symposium on Antennas and Propagation}, address = {Singapore}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 34. | Yong-Sun Shin; Seong-Ook Park Diversity Planar Monopole Antenna for WLAN Application with Enhanced isolation characteristics Conference 2006 7th International Symposium on Antennas, Propagation & EM Theory, China, 2006. @conference{Shin2006, title = {Diversity Planar Monopole Antenna for WLAN Application with Enhanced isolation characteristics}, author = {Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04168113.pdf}, doi = {10.1109/ISAPE.2006.353452}, year = {2006}, date = {2006-10-26}, booktitle = {2006 7th International Symposium on Antennas, Propagation & EM Theory}, address = {China}, abstract = {A printed diversity monopole antenna for WLAN operation at the 5 GHz band, such as the 5.2GHz (5150-5350 MHz) and 5.8GHz (5725-5875 MHz) bands is presented. The proposed diversity antenna fed by a coaxial connector consists of two planar monopole antennas which are symmetrical and a ground which has two slots for enhanced isolation characteristic between two antennas. The bandwidth of the diversity antenna (S1K-10 dB) has achieved about 2360 MHz starting from 4520 MHz to 6880 MHz. Details of the antenna design and experimental results are demonstrated.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A printed diversity monopole antenna for WLAN operation at the 5 GHz band, such as the 5.2GHz (5150-5350 MHz) and 5.8GHz (5725-5875 MHz) bands is presented. The proposed diversity antenna fed by a coaxial connector consists of two planar monopole antennas which are symmetrical and a ground which has two slots for enhanced isolation characteristic between two antennas. The bandwidth of the diversity antenna (S1K-10 dB) has achieved about 2360 MHz starting from 4520 MHz to 6880 MHz. Details of the antenna design and experimental results are demonstrated. |
| 33. | Se-Keun Oh; Yong-Sun Shin; Seong-Ook Park A novel PIFA type varactor tunable antenna with U-shaped slot Conference 2006 7th International Symposium on Antennas, Propagation & EM Theory, China, 2006. @conference{Oh2006b, title = {A novel PIFA type varactor tunable antenna with U-shaped slot}, author = {Se-Keun Oh and Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04168089.pdf}, doi = {10.1109/ISAPE.2006.353400}, year = {2006}, date = {2006-10-26}, booktitle = {2006 7th International Symposium on Antennas, Propagation & EM Theory}, address = {China}, abstract = {A planar inverted-F antenna type tunable antenna with U-shaped slot is proposed. A varactor diode is integrated between the slot and bias feeding strip line for tuning the operating frequency. This antenna covers from 1.64 GHz to 2.05 GHz refer to the dc bias voltage from 0 V to 20 V The frequency tuning range is about 410 MHz bandwidth which covers several mobile communication bands of DCS (1710~1880 MHz), PCS(1750~1870 MHz) and PCS(USA)(1850~1990 MHz). This antenna occupies a compact volume of 40 times 15 times 8 mm3. The simulation result is based on the Finite Integral Method.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A planar inverted-F antenna type tunable antenna with U-shaped slot is proposed. A varactor diode is integrated between the slot and bias feeding strip line for tuning the operating frequency. This antenna covers from 1.64 GHz to 2.05 GHz refer to the dc bias voltage from 0 V to 20 V The frequency tuning range is about 410 MHz bandwidth which covers several mobile communication bands of DCS (1710~1880 MHz), PCS(1750~1870 MHz) and PCS(USA)(1850~1990 MHz). This antenna occupies a compact volume of 40 times 15 times 8 mm3. The simulation result is based on the Finite Integral Method. |
| 32. | Jung-Hwan Choi; Yong-Sun Shin; Ki-Bok Kong; Seong-Ook Park 2006 7th International Symposium on Antennas, Propagation & EM Theory, China, 2006. @conference{Choi2006b, title = {3D Spherical Antenna Measurement System for CTIA OTA Testing and Characterizing of Mobile MIMO Terminals}, author = {Jung-Hwan Choi and Yong-Sun Shin and Ki-Bok Kong and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04168059.pdf}, doi = {10.1109/ISAPE.2006.353370}, year = {2006}, date = {2006-10-26}, booktitle = {2006 7th International Symposium on Antennas, Propagation & EM Theory}, address = {China}, abstract = {This paper describes the 3D spherical antenna measurement system for a passive antenna measurement, CTIA (Cellular Telecommunications & Internet Association) OTA (Over The Air) testing and characterizing of mobile MIMO (Multiple-Input Multiple-Output) terminals. The measurements of the monopole box are performed for the calibration of the proposed measurement system. Finally, the proposed system is able to measure the experimental model of MIMO terminal with adapting the diversity antenna system.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper describes the 3D spherical antenna measurement system for a passive antenna measurement, CTIA (Cellular Telecommunications & Internet Association) OTA (Over The Air) testing and characterizing of mobile MIMO (Multiple-Input Multiple-Output) terminals. The measurements of the monopole box are performed for the calibration of the proposed measurement system. Finally, the proposed system is able to measure the experimental model of MIMO terminal with adapting the diversity antenna system. |