Phongcharoenpanich, Chuwong
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Preferred name
Phongcharoenpanich, Chuwong
Alternative Name
PHONGCHAROENPANICH, Chuwong
Phongcharoenpanich, C.
Main Affiliation
Email
chuwong.ph@kmitl.ac.th
37 results
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Item type:Publication, An equivalent circuit of a bidirectional antenna using a probe excited rectangular ring(2004-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A unidirectional antenna using circular disc monopole excited circular ring above cylindrical reflector(2008-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Characteristics of a circular vertical patch antenna with cross-strip above cylindrical reflector(2007-12-01); Kosulvit, SompolIn this paper, a circular vertical patch antenna excited by probe with cross-strip above cylindrical reflector is proposed. The proposed antenna is used at base station for point-to-point communication in wireless local area network systems (WLAN). The antenna is analyzed by CST (Microwave Studio) program. The measured results of the prototype antenna operating at 2.45 GH z yields an impedance bandwidth (2:1 VSWR) of 32.60% (2.23-3.10 GHz). The antenna has unidirectional radiation pattern with front-to-back ratio (F/B) of greater than 26 dB in E-plane and H-plane. Maximum gain is about 9.7 dBi from measurement. The half-power beamwidth is 56 degree in E-plane and 58 degree in H-plane. The cross polarization of greater than 30 dB in both planes has been obtained. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electromagnetic coupling of a probe inside elliptical ring(2005-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Polarization reconfigurable suspended antenna using RF switches and P-I-N diodes(2014-01-01); Kosulvit, SompolPolarization reconfigurable square flat antenna using RF switches and P-I-N diodes is presented for WLAN application operated at the center frequency of 2.45 GHz. The proposed antenna consists of the square flat structure, three switches (six P-I-N diodes), transmission-line phase shifters of 0 and 90 degrees. The antenna can be switched between 5 different states: vertical, horizontal and slant polarizations for linear polarization (LP), left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP) by controlling the DC bias of 5 V and the current of 16 mA for the P-I-N diodes. The simulated and measured results show that the proposed antenna can cover the impedance bandwidth from 2.400 GHz to 2.484 GHz and good axial ratio for the circular polarization. © 2014 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A dual-band unidirectional antenna using a hemispherical monopole with circular reflector(2011-12-01); Kosulvit, SompolThis paper presents a unidirectional antenna using a hemispherical monopole with circular reflector for dual-band wireless communication applications. It consists of a hemispherical monopole with a sheet of stub. The stub is placed over a hemispherical monopole for low frequency band operation. The radiation patterns are controlled by circular reflector together with circular ring and rectangular ring. At 2.4 GHz, the antenna radiates by a sheet of stub and a hemispherical monopole with rectangular ring. At 5.8 GHz, it radiates by a hemispherical monopole with circular ring. The proposed antenna is designed to operate between 2.4-2.5 GHz and 5.15-5.85 GHz with S11 < 10 dB. The antenna has high gain and the radiation pattern at both bands are unidirectional beam. The simulated and measured results are presented. © 2011 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of circularly polarized unidirectional antenna using probe-excited circular ring antenna above the square reflector with inserted metallic slabs(2017-01-17); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Achievable diversity performance and range improvement from polarization diversity bi-directional antenna using two-probe excited circular ring(2004-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The space diversity analysis of bidirectional antenna using probe excited circular ring(2004-09-27); Kosulvit, SompolThis paper presents a space diversity analysis of bidirectional antenna using probe excited circular ring. The theoretical investigation is first carried out. The operating frequency is performed at 1.9065GHz. The electromagnetic fields of the ring with the aperture directs in z-axis is first calculated. Then, the transformations to x direction is achieved. The diversity characteristics such as mean effective gain correlation coefficient, and diversity gain are determined and compared among the arrangement in x,y and z directions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Specifically designed tag antenna based on I-Loop structure for UHF RFID applications(2015-01-01); Kosulvit, SompolThis paper presents the UHF RFID tag antenna designed for the operating frequency band of 920–925 MHz corresponding to the standard of UHF RFID in Thailand. The tag antenna was fabricated by using a thin FR4 substrate (ε<inf>r</inf> = 4.3) with the thickness of 0.25 mm. The pattern of the tag antenna is omnidirectional. The “KMITL” text bent dipole is the technique to reduce the physical size of the tag antenna. The I-loop structure is used to improve the impedances of the tag antenna to achieve the conjugate matching with the IC chip. The impedance of the IC chip at the frequency of 922.5 MHz is 21.29 − j191.7 Ω. The maximum read range is 4.5 m.