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

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APMC.2007.4555060

Filename

4555060