Title :
Characteristics of a Circular Vertical Patch Antenna with Cross-Strip above Cylindrical Reflector
Author :
Phaebua, Kittisak ; Phongcharoenpanich, Chuwong ; Kosulvit, Sompol
Author_Institution :
Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
In 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 GHz 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.
Keywords :
UHF antennas; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; radio links; reflector antennas; wireless LAN; WLAN; base station; circular vertical patch antenna; cross polarization; cylindrical reflector; frequency 2.45 GHz; point-to-point communication; unidirectional radiation pattern; wireless local area network systems; Antenna measurements; Bandwidth; Base stations; Impedance measurement; Microwave antennas; Microwave communication; Patch antennas; Probes; Prototypes; Wireless LAN; circular vertical patch antenna; cross-strip; unidirectional antenna;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4555060
