2005 |
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| 31. | Dong-Hyuk Choi; Young-Jun Cho; Seong-Ook Park A broadband T-shaped microstrip-line-fed slot antenna with harmonic suppression Conference 2005 Asia-Pacific Microwave Conference Proceedings, China, 2005. @conference{Choi2005c, title = {A broadband T-shaped microstrip-line-fed slot antenna with harmonic suppression}, author = {Dong-Hyuk Choi and Young-Jun Cho and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01606872.pdf}, doi = {10.1109/APMC.2005.1606872}, year = {2005}, date = {2005-12-04}, booktitle = {2005 Asia-Pacific Microwave Conference Proceedings}, address = {China}, abstract = {In this paper, a slot antenna is proposed to achieve both harmonic suppression and wide bandwidth. To obtain these results, a T-shaped microstrip-line-fed slot antenna and U-shaped conductor line connected with the ground plane are applied. At the fundamental and harmonic frequencies, return loss and radiation characteristics are measured and compared with those of the conventional slot antenna. For the proposed antenna, the 10-dB return loss bandwidth could reach 1220 MHz (1730-2950 MHz), which is about 52% with respect to the center frequency of 2340 MHz, and it is observed that the second and third harmonics of the proposed antenna is effectively suppressed.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } In this paper, a slot antenna is proposed to achieve both harmonic suppression and wide bandwidth. To obtain these results, a T-shaped microstrip-line-fed slot antenna and U-shaped conductor line connected with the ground plane are applied. At the fundamental and harmonic frequencies, return loss and radiation characteristics are measured and compared with those of the conventional slot antenna. For the proposed antenna, the 10-dB return loss bandwidth could reach 1220 MHz (1730-2950 MHz), which is about 52% with respect to the center frequency of 2340 MHz, and it is observed that the second and third harmonics of the proposed antenna is effectively suppressed. |
| 30. | Young-Jun Cho; Yong-Sun Shin; Soon-Ho Hwang; Ki-Hak Kim; Seong-Ook Park A miniature wideband internal antenna with dual resonant structures Conference 2005 Asia-Pacific Microwave Conference Proceedings, China, 2005. @conference{Cho2005d, title = {A miniature wideband internal antenna with dual resonant structures}, author = {Young-Jun Cho and Yong-Sun Shin and Soon-Ho Hwang and Ki-Hak Kim and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01606386.pdf}, doi = {10.1109/APMC.2005.1606386}, year = {2005}, date = {2005-12-04}, booktitle = {2005 Asia-Pacific Microwave Conference Proceedings}, address = {China}, abstract = {This paper suggests a miniature wideband internal antenna with dual resonant structures for operating at multi-band handset applications. It consists of two radiation monopole elements with parallel connection in the limited handset interior space. The proposed antenna can be easily placed in practical handsets because of the small size of 20 /spl times/ 17 /spl times/ 3.5 mm/sup 3/. The measured bandwidth of the proposed antenna shows about 1 GHz from 1.71 GHz (DCS band) to 2.71 GHz (Bluetooth band) with VSWR below 2. It also resonates at GPS band of 1.57542 GHz. The electrical and structural characteristics of the proposed antenna make it attractive for use in mobile handset applications.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper suggests a miniature wideband internal antenna with dual resonant structures for operating at multi-band handset applications. It consists of two radiation monopole elements with parallel connection in the limited handset interior space. The proposed antenna can be easily placed in practical handsets because of the small size of 20 /spl times/ 17 /spl times/ 3.5 mm/sup 3/. The measured bandwidth of the proposed antenna shows about 1 GHz from 1.71 GHz (DCS band) to 2.71 GHz (Bluetooth band) with VSWR below 2. It also resonates at GPS band of 1.57542 GHz. The electrical and structural characteristics of the proposed antenna make it attractive for use in mobile handset applications. |
| 29. | Ki-Hak Kim; Young-Jun Cho; Soon-Ho Hwang; Seong-Ook Park A band-rejected UWB planar monopole antenna with a ring-shaped parasitic patch Conference 2005 Asia-Pacific Microwave Conference Proceedings, China, 2005. @conference{Kim2005c, title = {A band-rejected UWB planar monopole antenna with a ring-shaped parasitic patch}, author = {Ki-Hak Kim and Young-Jun Cho and Soon-Ho Hwang and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01606848.pdf}, doi = {10.1109/APMC.2005.1606848}, year = {2005}, date = {2005-12-04}, booktitle = {2005 Asia-Pacific Microwave Conference Proceedings}, address = {China}, abstract = {A novel UWB antenna with a band elimination characteristic is presented. The proposed antenna is fed by microstrip line, and it consists of the planar monopole type with a ring-shaped parasitic patch rejecting 5.15/spl sim/5.825GHz band limited by IEEE 802.11a and HIPERLAN/2. The fabricated antenna can achieve the broad bandwidth covering from 2.2 to 11.8GHz with VSWR below 2. The proposed antenna performances are very suitable for the UWB applications. }, keywords = {}, pubstate = {published}, tppubtype = {conference} } A novel UWB antenna with a band elimination characteristic is presented. The proposed antenna is fed by microstrip line, and it consists of the planar monopole type with a ring-shaped parasitic patch rejecting 5.15/spl sim/5.825GHz band limited by IEEE 802.11a and HIPERLAN/2. The fabricated antenna can achieve the broad bandwidth covering from 2.2 to 11.8GHz with VSWR below 2. The proposed antenna performances are very suitable for the UWB applications. |
| 28. | Young-Jun Cho; Yong-Sun Shin; Seong-Ook Park An internal PIFA for 2.4/5 GHz WLAN applications Conference 2005 Asia-Pacific Microwave Conference Proceedings, China, 2005. @conference{Cho2005e, title = {An internal PIFA for 2.4/5 GHz WLAN applications}, author = {Young-Jun Cho and Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01606903.pdf}, doi = {10.1109/APMC.2005.1606903}, year = {2005}, date = {2005-12-04}, booktitle = {2005 Asia-Pacific Microwave Conference Proceedings}, address = {China}, abstract = {This paper presents a internal planar inverted-F antenna (PIFA) for 2.4/5 GHz Bluetooth and WLAN applications. The proposed antenna has a small ground plane with the achievement of impedance bandwidth of 110 MHz (2.38 /spl sim/ 2.49 GHz) in the Bluetooth band and 900 MHz (5.1 /spl sim/ 6.0 GHz) near 5 GHz in WLAN band within 2:1 voltage standing wave ratio (VSWR), and an approximately omni-directional radiation pattern is obtained. It also shows a good antenna gain. These features make it alternative for use in dual-band WLAN antenna.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents a internal planar inverted-F antenna (PIFA) for 2.4/5 GHz Bluetooth and WLAN applications. The proposed antenna has a small ground plane with the achievement of impedance bandwidth of 110 MHz (2.38 /spl sim/ 2.49 GHz) in the Bluetooth band and 900 MHz (5.1 /spl sim/ 6.0 GHz) near 5 GHz in WLAN band within 2:1 voltage standing wave ratio (VSWR), and an approximately omni-directional radiation pattern is obtained. It also shows a good antenna gain. These features make it alternative for use in dual-band WLAN antenna. |
| 27. | Byoung-Nam Kim; Seong-Ook Park; Jung-Keun Oh 2005 Asia-Pacific Microwave Conference Proceedings, China, 2005. @conference{Kim2005d, title = {A wideband built-in antenna with omni-directional radiation pattern using dual radiators for wireless terminals}, author = {Byoung-Nam Kim and Seong-Ook Park and Jung-Keun Oh}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01606855.pdf}, doi = {10.1109/APMC.2005.1606855}, year = {2005}, date = {2005-12-04}, booktitle = {2005 Asia-Pacific Microwave Conference Proceedings}, address = {China}, abstract = {A new built-in antenna is proposed with omni-directional radiation characteristics and wideband for wireless terminals. Bandwidth of built-in antenna is dependent on length and width of the chassis [Outi Kivekas (2003)]. Radiation characteristics of built-in antenna are also very sensitive to chassis size and mounting position. When size of chassis is increased, radiation pattern characteristics of built-in antenna are more degenerative in the high frequencies (1800MHz/spl sim/2200MHz) than those of antenna in the low frequency (900MHz) among current cellular services. This paper proposes a balanced dual radiators built-in antenna with special impedance matching branch for bar-type handsets (45mm /spl times/ 100mm), which built-in antenna is operating at PCS and IMT-2000 band. Using suggested technique, we improved -6dB impedance bandwidth by about 75% and also obtain the omni-directional radiation pattern even though which is mounted on relatively large chassis.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A new built-in antenna is proposed with omni-directional radiation characteristics and wideband for wireless terminals. Bandwidth of built-in antenna is dependent on length and width of the chassis [Outi Kivekas (2003)]. Radiation characteristics of built-in antenna are also very sensitive to chassis size and mounting position. When size of chassis is increased, radiation pattern characteristics of built-in antenna are more degenerative in the high frequencies (1800MHz/spl sim/2200MHz) than those of antenna in the low frequency (900MHz) among current cellular services. This paper proposes a balanced dual radiators built-in antenna with special impedance matching branch for bar-type handsets (45mm /spl times/ 100mm), which built-in antenna is operating at PCS and IMT-2000 band. Using suggested technique, we improved -6dB impedance bandwidth by about 75% and also obtain the omni-directional radiation pattern even though which is mounted on relatively large chassis. |
| 26. | Young-Jun Cho; Ki-Hak Kim; Soon-Ho Hwang; Seong-Ook Park A miniature UWB planar monopole antenna with 5 GHz band-rejection filter Conference The European Conference on Wireless Technology, France, 2005. @conference{Cho2005f, title = {A miniature UWB planar monopole antenna with 5 GHz band-rejection filter}, author = {Young-Jun Cho and Ki-Hak Kim and Soon-Ho Hwang and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01617769.pdf}, doi = {10.1109/ECWT.2005.1617769}, year = {2005}, date = {2005-10-03}, booktitle = {The European Conference on Wireless Technology}, address = {France}, abstract = {A noble planar monopole antenna with a staircase shape and very small volume ( 25 times 26 times 1 mm3 ) is proposed in this paper. With the use of a half-bowtie radiation element, the staircase-shape, and a modified ground plane structure, the proposed antenna has a very wide impedance bandwidth measured at about 11.6 GHz (2.9 GHz ~ 14.5 GHz, bandwidth ratio about 1:5) below VSWR 2 including the WLAN band notched in the vicinity of 5 GHz. An omni-directional radiation pattern is obtained. The electrical and physical characteristics of the proposed antenna make it attractive for use in ultrawide band systems}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A noble planar monopole antenna with a staircase shape and very small volume ( 25 times 26 times 1 mm3 ) is proposed in this paper. With the use of a half-bowtie radiation element, the staircase-shape, and a modified ground plane structure, the proposed antenna has a very wide impedance bandwidth measured at about 11.6 GHz (2.9 GHz ~ 14.5 GHz, bandwidth ratio about 1:5) below VSWR 2 including the WLAN band notched in the vicinity of 5 GHz. An omni-directional radiation pattern is obtained. The electrical and physical characteristics of the proposed antenna make it attractive for use in ultrawide band systems |
| 25. | Jung-Hwan Choi; Seong-Ook Park Progress In Electromagnetics Research Symposium, China, 2005. @conference{Choi2005g, title = {A measurement system using Dual-phase Lock-in amplifier for optically modulated scattering microwave fields}, author = {Jung-Hwan Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/52.pdf}, year = {2005}, date = {2005-08-22}, booktitle = {Progress In Electromagnetics Research Symposium}, address = {China}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 24. | Dong-Hyuk Choi; Seong-Ook Park Active Integrated Oscillator Antenna Using Microstrip-T Coupled Patch Antenna Conference International Symposium on Antennas and Propagation, Korea, 2005. @conference{Choi2005d, title = {Active Integrated Oscillator Antenna Using Microstrip-T Coupled Patch Antenna}, author = {Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/1D12.pdf}, year = {2005}, date = {2005-08-01}, booktitle = {International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 23. | Soon-Ho Hwang; Young-Jun Cho; Seong-Ook Park A Printed Multi-Band Antenna for 2.4/5GHz WLAN and Satellite DMB Applications Conference International Symposium on Antennas and Propagation, Korea, 2005. @conference{Hwang2005c, title = {A Printed Multi-Band Antenna for 2.4/5GHz WLAN and Satellite DMB Applications}, author = {Soon-Ho Hwang and Young-Jun Cho and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/1B31.pdf}, year = {2005}, date = {2005-08-01}, booktitle = {International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 22. | Young-Jun Cho; Soon-Ho Hwang; Seong-Ook Park A Printed Miniature Dual-Band Antenna with Folded Meander-line Dipole type for 2.4/5GHz WLAN Bands Conference International Symposium on Antennas and Propagation, Korea, 2005. @conference{Cho2005h, title = {A Printed Miniature Dual-Band Antenna with Folded Meander-line Dipole type for 2.4/5GHz WLAN Bands}, author = {Young-Jun Cho and Soon-Ho Hwang and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/50.pdf}, year = {2005}, date = {2005-08-01}, booktitle = {International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 21. | Ki-Hak Kim; Young-Jun Cho; Soon-Ho Hwang; Seong-Ook Park Design of a Band-rejected UWB Planar Monopole Antenna with two parasitic Patches Conference International Symposium on Antennas and Propagation, Korea, 2005. @conference{Kim2005e, title = {Design of a Band-rejected UWB Planar Monopole Antenna with two parasitic Patches}, author = {Ki-Hak Kim and Young-Jun Cho and Soon-Ho Hwang and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/49.pdf}, year = {2005}, date = {2005-08-01}, booktitle = {International Symposium on Antennas and Propagation}, address = {Korea}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 20. | Soon-Ho Hwang; Young-Jun Cho; Seong-Ook Park An internal dual band antenna for Bluetooth/DMB applications Conference 2005 IEEE Antennas and Propagation Society International Symposium, U.S., 2005. @conference{Hwang2005b, title = {An internal dual band antenna for Bluetooth/DMB applications}, author = {Soon-Ho Hwang and Young-Jun Cho and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01552065.pdf}, doi = {10.1109/APS.2005.1552065}, year = {2005}, date = {2005-07-03}, booktitle = {2005 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {An internal dual band antenna is proposed for Bluetooth and digital multimedia broadcasting (DMB) services. This novel antenna, fed by a 50 /spl Omega/ coaxial cable, operates at the Bluetooth (2400-2483 MHz) and DMB (2535-2655 MHz) bands, respectively. The size of this antenna is 17/spl times/10 mm/sup 2/ and its height is 7 mm. When this antenna is applied for handset case, the bandwidth of presented antenna is 290 MHz starting from 2400 MHz to 2690 MHz for VSWR <2.0. The simulated and measured results were obtained by considering the antenna with and without the handset case, including battery.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } An internal dual band antenna is proposed for Bluetooth and digital multimedia broadcasting (DMB) services. This novel antenna, fed by a 50 /spl Omega/ coaxial cable, operates at the Bluetooth (2400-2483 MHz) and DMB (2535-2655 MHz) bands, respectively. The size of this antenna is 17/spl times/10 mm/sup 2/ and its height is 7 mm. When this antenna is applied for handset case, the bandwidth of presented antenna is 290 MHz starting from 2400 MHz to 2690 MHz for VSWR <2.0. The simulated and measured results were obtained by considering the antenna with and without the handset case, including battery. |
| 19. | Young-Jun Cho; Soon-Ho Hwang; Osami Ishida; Seong-Ook Park 2005 IEEE Antennas and Propagation Society International Symposium, U.S., 2005. @conference{Cho2005g, title = {Dual-band internal antenna of PIFA type for mobile handsets and the effect of the handset case and battery}, author = {Young-Jun Cho and Soon-Ho Hwang and Osami Ishida and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01551360.pdf}, doi = {10.1109/APS.2005.1551360}, year = {2005}, date = {2005-07-03}, booktitle = {2005 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper presents a novel compact internal antenna with the modified planar inverted F antenna (PIFA) type and investigates the influence of the handset case and battery. The proposed antenna operates at KPCS (1750-1870 MHz), and Bluetooth (2400-2483.5 MHz) bands in a practical handset. The represented antenna can be easily installed in practical handsets with the small size. The bandwidth of the proposed antenna (VSWR < 2) shows 140 MHz in KPCS band and 90 MHz in Bluetooth. Numerical simulation and experiment results are performed considering the antenna and the telephone case and battery.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents a novel compact internal antenna with the modified planar inverted F antenna (PIFA) type and investigates the influence of the handset case and battery. The proposed antenna operates at KPCS (1750-1870 MHz), and Bluetooth (2400-2483.5 MHz) bands in a practical handset. The represented antenna can be easily installed in practical handsets with the small size. The bandwidth of the proposed antenna (VSWR < 2) shows 140 MHz in KPCS band and 90 MHz in Bluetooth. Numerical simulation and experiment results are performed considering the antenna and the telephone case and battery. |
| 18. | Dong-Hyuk Choi; Seong-Ook Park Varactor-tuned active integrated antenna using slot antenna Conference 2005 IEEE Antennas and Propagation Society International Symposium, U.S., 2005. @conference{Choi2005e, title = {Varactor-tuned active integrated antenna using slot antenna}, author = {Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01551778.pdf}, doi = {10.1109/APS.2005.1551778}, year = {2005}, date = {2005-07-03}, booktitle = {2005 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {A varactor-tuned active integrated antenna which is consisted of a series feedback voltage-controlled oscillator (VCO) and a matched slot antenna is proposed. The fabricated antenna has a stable oscillation at 5.8 GHz band, and the frequency varies form 5.73 GHz to 5.97 GHz, with less than 1.28 dB of amplitude deviation over the frequency range.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A varactor-tuned active integrated antenna which is consisted of a series feedback voltage-controlled oscillator (VCO) and a matched slot antenna is proposed. The fabricated antenna has a stable oscillation at 5.8 GHz band, and the frequency varies form 5.73 GHz to 5.97 GHz, with less than 1.28 dB of amplitude deviation over the frequency range. |
| 17. | Dong-Hyuk Choi; Seong-Ook Park Active Integrated Antenna Using T-Shaped Microstrip-line-fed Slot Antenna Conference 2005 IEEE Antennas and Propagation Society International Symposium, U.S., 2005. @conference{Choi2005f, title = {Active Integrated Antenna Using T-Shaped Microstrip-line-fed Slot Antenna}, author = {Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01551776.pdf}, doi = {10.1109/APS.2005.1551776}, year = {2005}, date = {2005-07-03}, booktitle = {2005 IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper presents an active integrated antenna using a T-shaped microstrip-line-fed slot antenna which acts as DC isolation in the RF path and has a wide bandwidth. A fabricated parallel feedback antenna oscillator has a stable oscillation and a clean spectrum at the frequency of 10.05 GHz, which is only 0.5 % deviation from the designed frequency of 10 GHz. The measured EIRP is 37.79 mW, and the cross-polarization levels are at least -15 dB lower than the co-polarization ones for all directions.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents an active integrated antenna using a T-shaped microstrip-line-fed slot antenna which acts as DC isolation in the RF path and has a wide bandwidth. A fabricated parallel feedback antenna oscillator has a stable oscillation and a clean spectrum at the frequency of 10.05 GHz, which is only 0.5 % deviation from the designed frequency of 10 GHz. The measured EIRP is 37.79 mW, and the cross-polarization levels are at least -15 dB lower than the co-polarization ones for all directions. |
2004 |
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| 16. | Dong-Uk Sim; Seong-Ook Park IEEE Antennas and Propagation Society Symposium, U.S., 2004, ISBN: 0-7803-8302-8. @conference{Sim2004b, title = {The effects of the handset case, battery, and human head on the performance of a triple-band internal antenna}, author = {Dong-Uk Sim and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01330586.pdf}, doi = {10.1109/APS.2004.1330586}, isbn = {0-7803-8302-8}, year = {2004}, date = {2004-06-20}, booktitle = {IEEE Antennas and Propagation Society Symposium}, address = {U.S.}, abstract = {An internal triple-band antenna fed by a microstrip line is proposed for operation in the PCS (1750-1870 MHz), IMT-2000 (1920-2170 MHz), and Bluetooth (2402-2483.5 MHz) bands. It has the advantages of sufficient impedance bandwidth, easy placement on the substrate, and compact size over most internal antennas. At first, only the antenna itself is designed to satisfy the desired operation, but, in the real situation, its performance is affected by the handset case, battery, or human head. In most cases, it is not uncommon that the antenna is modified to obtain the desired characteristics. Accordingly, the variation of the antenna performance for that case should be investigated. We present advanced physical models for the effects of case, battery and head on the proposed antenna for accurate simulations of real situations. Measured data is compared with computational results to validate the proposed design methods.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } An internal triple-band antenna fed by a microstrip line is proposed for operation in the PCS (1750-1870 MHz), IMT-2000 (1920-2170 MHz), and Bluetooth (2402-2483.5 MHz) bands. It has the advantages of sufficient impedance bandwidth, easy placement on the substrate, and compact size over most internal antennas. At first, only the antenna itself is designed to satisfy the desired operation, but, in the real situation, its performance is affected by the handset case, battery, or human head. In most cases, it is not uncommon that the antenna is modified to obtain the desired characteristics. Accordingly, the variation of the antenna performance for that case should be investigated. We present advanced physical models for the effects of case, battery and head on the proposed antenna for accurate simulations of real situations. Measured data is compared with computational results to validate the proposed design methods. |
| 15. | Yong-Sun Shin; Seong-Ook Park Broadband internal antenna of planar monopole type for mobile handsets Conference IEEE Antennas and Propagation Society Symposium, U.S., 2004, ISBN: 0-7803-8302-8. @conference{Shin2004b, title = {Broadband internal antenna of planar monopole type for mobile handsets}, author = {Yong-Sun Shin and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01330295.pdf}, doi = {10.1109/APS.2004.1330295}, isbn = {0-7803-8302-8}, year = {2004}, date = {2004-06-20}, booktitle = {IEEE Antennas and Propagation Society Symposium}, address = {U.S.}, abstract = {The paper presents a novel internal antenna of a planar monopole type. The proposed antenna, fed by a 50 /spl Omega/ microstrip line, operates at DCS (1710-1880 MHz), PCS (1750-1870 MHz), and IMT-2000 (1885-2200 MHz) bands. The size of the antenna, not including the support, is 20/spl times/17/spl times/0.2 mm/sup 3/. The bandwidth of the proposed antenna (S11<10 dB) is 740 MHz, from 1620 MHz to 2360 MHz. Numerical simulation and experiment results are performed taking into consideration the antenna itself, the phone case, and the battery.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The paper presents a novel internal antenna of a planar monopole type. The proposed antenna, fed by a 50 /spl Omega/ microstrip line, operates at DCS (1710-1880 MHz), PCS (1750-1870 MHz), and IMT-2000 (1885-2200 MHz) bands. The size of the antenna, not including the support, is 20/spl times/17/spl times/0.2 mm/sup 3/. The bandwidth of the proposed antenna (S11<10 dB) is 740 MHz, from 1620 MHz to 2360 MHz. Numerical simulation and experiment results are performed taking into consideration the antenna itself, the phone case, and the battery. |
2003 |
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| 14. | Jung-Ick Moon; Seong-Ook Park The Design of Small Size Chip Antenna for 2.4/5.8 dual ISM-band applications Conference 2003 33rd European Microwave Conference, Germany, 2003. @conference{Moon2003c, title = {The Design of Small Size Chip Antenna for 2.4/5.8 dual ISM-band applications}, author = {Jung-Ick Moon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/04143255.pdf}, doi = {10.1109/EUMA.2003.340849}, year = {2003}, date = {2003-10-02}, booktitle = {2003 33rd European Microwave Conference}, address = {Germany}, abstract = {This paper proposed a novel chip type ceramic dielectric antenna by using the advanced meander line technique for 2.4/5.8 dual ISM-band applications. This antenna is composed of a ceramic dielectric(8×4×1.5mm3, alumina) and substrate(1.52 mm thickness, TMM-4). And to minimize the antenna's available area on the substrate and to reduce the coupling effect with the ground plane, the antenna is located on the corner of substrate. The measured bandwidth and maximum radiation gain of the proposed antenna is 2.35-2.57 GHz(VSWR<2), 2.07 dBi @2.44 GHz and 5.29-6.01 GHz, 1.17 dBi @5.75 GHz. From the result, it is demonstrated that our proposed antenna can be applicable to the dual-ISM band applications.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper proposed a novel chip type ceramic dielectric antenna by using the advanced meander line technique for 2.4/5.8 dual ISM-band applications. This antenna is composed of a ceramic dielectric(8×4×1.5mm3, alumina) and substrate(1.52 mm thickness, TMM-4). And to minimize the antenna's available area on the substrate and to reduce the coupling effect with the ground plane, the antenna is located on the corner of substrate. The measured bandwidth and maximum radiation gain of the proposed antenna is 2.35-2.57 GHz(VSWR<2), 2.07 dBi @2.44 GHz and 5.29-6.01 GHz, 1.17 dBi @5.75 GHz. From the result, it is demonstrated that our proposed antenna can be applicable to the dual-ISM band applications. |
| 13. | Jung-Ick Moon; Seong-Ook Park The design of small size chip ceramic dielectric antenna for Bluetooth application Conference IEEE Antennas and Propagation Society International Symposium, U.S., 2003. @conference{Moon2003d, title = {The design of small size chip ceramic dielectric antenna for Bluetooth application}, author = {Jung-Ick Moon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01219393.pdf}, doi = {10.1109/APS.2003.1219393}, year = {2003}, date = {2003-06-22}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper proposes a novel chip type ceramic dielectric antenna by using the advanced meander line technique that the radiation metals are formed on both the face of ceramic dielectric (8/spl times/4/spl times/1.5 mm, alumina) and the two faces of the substrate (1.0 mm thickness FR-4). The performance of the antenna model has a good agreement between measured and computed results. In the results, it has a 10 dB return-loss bandwidth (2.4-2.48 GHz) and 0.5 dBi measured radiation gain for Bluetooth application.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper proposes a novel chip type ceramic dielectric antenna by using the advanced meander line technique that the radiation metals are formed on both the face of ceramic dielectric (8/spl times/4/spl times/1.5 mm, alumina) and the two faces of the substrate (1.0 mm thickness FR-4). The performance of the antenna model has a good agreement between measured and computed results. In the results, it has a 10 dB return-loss bandwidth (2.4-2.48 GHz) and 0.5 dBi measured radiation gain for Bluetooth application. |
| 12. | Jung-Min Park; Dong-Hyuk Choi; Seong-Ook Park IEEE Antennas and Propagation Society International Symposium, U.S., 2003. @conference{Park2003b, title = {Wireless vital signal detection systems and its applications at 1.9GHz and 10GHz [biomedical applications]}, author = {Jung-Min Park and Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01220381.pdf}, doi = {10.1109/APS.2003.1220381}, year = {2003}, date = {2003-06-22}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {A wireless vital signal detection system, which is analogous to Doppler radar, can measure respiration and heart rates with periodic movement of skin and muscle near the heart. The detection system consists of antenna, RF transceiver (transmitter and receiver), and baseband section. In this paper, the link budget of the detecting system is analyzed and the signal detected from the system is compared with the electrocardiogram (ECG) signal of a monitor which is used for patient monitoring in a hospital. Then, the detection of vital signs is also performed according to various environments, such as different distances and behind a wall.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A wireless vital signal detection system, which is analogous to Doppler radar, can measure respiration and heart rates with periodic movement of skin and muscle near the heart. The detection system consists of antenna, RF transceiver (transmitter and receiver), and baseband section. In this paper, the link budget of the detecting system is analyzed and the signal detected from the system is compared with the electrocardiogram (ECG) signal of a monitor which is used for patient monitoring in a hospital. Then, the detection of vital signs is also performed according to various environments, such as different distances and behind a wall. |
| 11. | Young-Bae Kwon; Seong-Ook Park Broadband Microstrip Patch Antenna with Rhombic Slot Conference IEEE Antennas and Propagation Society International Symposium, U.S., 2003. @conference{Kwon2003b, title = {Broadband Microstrip Patch Antenna with Rhombic Slot}, author = {Young-Bae Kwon and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01219378.pdf}, doi = {10.1109/APS.2003.1219378}, year = {2003}, date = {2003-06-22}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper presents the rhombic slot antenna that has a broadband characteristic by using a low cost foam-substrate. The feed line is embedded in the middle of the triplate to prevent unwanted and spurious radiation. The proposed rhombic slot antenna has a rectangular patch with supplementary section to improve the impedance bandwidth performance. Experiments using a 2/spl times/1 array antenna are performed to validate the simulation. A bandwidth of 40% can be achieved. The electrical characteristics of the proposed antenna make it attractive for use in satellite communications.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents the rhombic slot antenna that has a broadband characteristic by using a low cost foam-substrate. The feed line is embedded in the middle of the triplate to prevent unwanted and spurious radiation. The proposed rhombic slot antenna has a rectangular patch with supplementary section to improve the impedance bandwidth performance. Experiments using a 2/spl times/1 array antenna are performed to validate the simulation. A bandwidth of 40% can be achieved. The electrical characteristics of the proposed antenna make it attractive for use in satellite communications. |
2002 |
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| 10. | Dong-Hyuk Choi; Seong-Ook Park Radiation Patterns of the Antenna Mounted on Complex Structure Using FDTD Algorithm Conference International Symposium on Antennas and Propagation, Japan, 2002. @conference{Choi2002, title = {Radiation Patterns of the Antenna Mounted on Complex Structure Using FDTD Algorithm}, author = {Dong-Hyuk Choi and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/00149.pdf}, year = {2002}, date = {2002-11-25}, booktitle = {International Symposium on Antennas and Propagation}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 9. | Kyoung-Bin Park; Seong-Ook Park International Symposium on Antennas and Propagation, Japan, 2002. @conference{Park2002, title = {Estimation of the enhanced scanning performance of triangular grid in cavity-backed microstrip array antenna}, author = {Kyoung-Bin Park and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/00131.pdf}, year = {2002}, date = {2002-11-25}, booktitle = {International Symposium on Antennas and Propagation}, address = {Japan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 8. | Dae-Sik Yim; Seong-Ook Park A Novel Small Size and Wide-Band Internal Chip Antenna for IMT-2000 Conference IEEE Antennas and Propagation Society International Symposium, U.S., 2002, ISBN: 0-7803-7330-8. @conference{Yim2002, title = {A Novel Small Size and Wide-Band Internal Chip Antenna for IMT-2000}, author = {Dae-Sik Yim and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01018146.pdf}, doi = {10.1109/APS.2002.1018146}, isbn = {0-7803-7330-8}, year = {2002}, date = {2002-06-16}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
| 7. | Kai Li; Seong-Ook Park 2002 3rd International Symposium on Electromagnetic Compatibility, China, 2002, ISBN: 0-7803-7277-8. @conference{Li2002, title = {Analytical Evaluation of the Asymptotic Impedance Matrix of a Uniaxial Substrate with Roof-Top Functions}, author = {Kai Li and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/01177514.pdf}, doi = {10.1109/ELMAGC.2002.1177514}, isbn = {0-7803-7277-8}, year = {2002}, date = {2002-05-21}, booktitle = {2002 3rd International Symposium on Electromagnetic Compatibility}, address = {China}, abstract = {An asymptotic technique is presented to solve the asymptotic part of the impedance matrix in the spectral domain for printed circuit structures on a uniaxial substrate by using roof-top subdomain expansions. The infinite double integral of the asymptotic part of the impedance matrix is reduced to a finite one-dimensional integral by performing the integral transform technique. The efficiency and accuracy of the proposed method are compared with those of the conventional method, and it is demonstrated that the proposed method reduce the computation and improve the accuracy for the anisotropic uniaxial case.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } An asymptotic technique is presented to solve the asymptotic part of the impedance matrix in the spectral domain for printed circuit structures on a uniaxial substrate by using roof-top subdomain expansions. The infinite double integral of the asymptotic part of the impedance matrix is reduced to a finite one-dimensional integral by performing the integral transform technique. The efficiency and accuracy of the proposed method are compared with those of the conventional method, and it is demonstrated that the proposed method reduce the computation and improve the accuracy for the anisotropic uniaxial case. |
2001 |
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| 6. | Jong-Pil Lee; Seong-Ook Park; Jung-Keun Oh; Ke-Young Park A novel small size and high gain antenna for 2.45GHz band application Conference IEEE Antennas and Propagation Society International Symposium, U.S., 2001. @conference{Lee2001, title = {A novel small size and high gain antenna for 2.45GHz band application}, author = {Jong-Pil Lee and Seong-Ook Park and Jung-Keun Oh and Ke-Young Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/00959499.pdf}, doi = {10.1109/APS.2001.959499}, year = {2001}, date = {2001-07-08}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {We propose a novel patch antenna with a small size and high gain. The conventional chip antennas are made of very high dielectric materials. They have a small size but a low radiation gain. Instead of using a dielectric material, the proposed antenna has a small size while retaining a high gain. The proposed antenna has a size of 15/spl times/10/spl times/6 mm, a bandwidth of 7.4%(@2.44 GHz. |Si/sub 11/|/spl les/-10 dB and 2.73 dBi gain.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } We propose a novel patch antenna with a small size and high gain. The conventional chip antennas are made of very high dielectric materials. They have a small size but a low radiation gain. Instead of using a dielectric material, the proposed antenna has a small size while retaining a high gain. The proposed antenna has a size of 15/spl times/10/spl times/6 mm, a bandwidth of 7.4%(@2.44 GHz. |Si/sub 11/|/spl les/-10 dB and 2.73 dBi gain. |
| 5. | Young-Bae Jung; Seong-Ook Park Low-cost design of stacked microstrip array antenna for DBS application Conference IEEE Antennas and Propagation Society International Symposium, U.S., 2001. @conference{Jung2001, title = {Low-cost design of stacked microstrip array antenna for DBS application}, author = {Young-Bae Jung and Seong-Ook Park}, url = {http://143.248.148.42/wordpress/wp-content/uploads/2018/10/00959609.pdf}, doi = {10.1109/APS.2001.959609}, year = {2001}, date = {2001-07-08}, booktitle = {IEEE Antennas and Propagation Society International Symposium}, address = {U.S.}, abstract = {This paper presents a circularly polarized stacked slot array antenna using a low cost foam-substrate. The feed line is embedded in the middle of the triplate to prevent unwanted and spurious radiation. The proposed stacked slot array antenna has a modified slot with supplementary section to improve the axial ratio and impedance bandwidth performance. The experimental and theoretical results of an 8/spl times/8 array antenna are performed to receive a DBS (Direct Broadcast from Satellite) signal.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } This paper presents a circularly polarized stacked slot array antenna using a low cost foam-substrate. The feed line is embedded in the middle of the triplate to prevent unwanted and spurious radiation. The proposed stacked slot array antenna has a modified slot with supplementary section to improve the axial ratio and impedance bandwidth performance. The experimental and theoretical results of an 8/spl times/8 array antenna are performed to receive a DBS (Direct Broadcast from Satellite) signal. |
1999 |
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| 4. | Seong-Ook Park; C.A. Balanis; C.R. Birtcher Scattering of Rectangular Microstrip Patch using Acceleration Technique Conference Progress in Electromagnetics Research Symposium, Taiwan, 1999. @conference{Park1999, title = {Scattering of Rectangular Microstrip Patch using Acceleration Technique}, author = {Seong-Ook Park and C.A. Balanis and C.R. Birtcher}, year = {1999}, date = {1999-03-22}, booktitle = {Progress in Electromagnetics Research Symposium}, address = {Taiwan}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
1998 |
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| 3. | Seong-Ook Park; C.A. Balanis Analytical Asymptotic Extraction Techniques for Gap Discontinuities Conference International Symposium on Electromagnetic Theory, 1 , Greece, 1998. @conference{Park1998c, title = {Analytical Asymptotic Extraction Techniques for Gap Discontinuities}, author = {Seong-Ook Park and C.A. Balanis}, year = {1998}, date = {1998-05-28}, booktitle = {International Symposium on Electromagnetic Theory}, volume = {1}, pages = {136 - 138}, address = {Greece}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
1997 |
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| 2. | Seong-Ook Park; C.A. Balanis Analytical Techniques for the Evaluation of the Asymptotic Matrix Elements in Method of Moments Conference NATO Advanced Study Institute, Greece, 1997. @conference{Park1997b, title = {Analytical Techniques for the Evaluation of the Asymptotic Matrix Elements in Method of Moments}, author = {Seong-Ook Park and C.A. Balanis}, year = {1997}, date = {1997-07-26}, booktitle = {NATO Advanced Study Institute}, pages = {11}, address = {Greece}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
1996 |
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| 1. | Seong-Ook Park; C.A. Balanis Closed-Form Extraction of Dispersion Characteristics of Open Microstrip Lines Conference URSI Radio Science Meeting, U.S., 1996. @conference{Park1996c, title = {Closed-Form Extraction of Dispersion Characteristics of Open Microstrip Lines}, author = {Seong-Ook Park and C.A. Balanis}, year = {1996}, date = {1996-07-21}, booktitle = {URSI Radio Science Meeting}, address = {U.S.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |