A wide-band dual-polarization patch antenna for mobile applications

Author

Zeidofski, Daaf ; Zakhar, John

Author_Institution

Electr. Eng. Dept., Northern Univ., Dhaka, Bangladesh

Volume

4

fYear

2004

fDate

20-25 June 2004

Firstpage

4384

Abstract

A broadband dual-polarization patch antenna fed by L-shaped probes at the patch corners is presented. A coupled line directional coupler mounted at the back of the ground plane is used to enhance the isolation between the L-probes to a large extent. Through using the coupler to feed the L-probes, the isolation between the input ports is 34 dB over the GSM900 operating bandwidth, which is enhanced by 14 dB. By using two plastic spacers to support the patch in the air, an impedance bandwidth of 18%, and an average gain of 7 dBi can be obtained for both ports. The far field patterns are stable across the passband. This antenna can potentially be used as a GSM900 base station antenna.

Keywords

antenna earths; antenna feeds; antenna radiation patterns; broadband antennas; cellular radio; directional couplers; electromagnetic wave polarisation; microstrip antenna arrays; GSM900; L-shaped probes; base station antenna; broadband patch antenna; coupled line directional coupler; dual-polarization patch antenna; far field patterns; feed; ground plane; isolation; mobile applications; plastic spacers; wideband patch antenna; Bandwidth; Base stations; Broadband antennas; Directional couplers; Feeds; Impedance; Passband; Patch antennas; Plastics; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330323

Filename

1330323