A wideband L-probe fed patch antenna for pattern reconfiguration

Author

Yang, Steven Shing-Lung ; Luk, Kwai-Man

Author_Institution

Dept. of Electr. Eng., City Univ. of Hong Kong, China

fYear

2005

fDate

3-8 July 2005

Firstpage

581

Abstract

An L-probe coupled circular patch antenna with four metallic shorting posts is demonstrated. The TM₀₁ conical and the TM₁₁ broadside modes could be excited separately by two sets of L-shaped probes at the same frequency range. For a tested antenna operated at 1.85GHz, the measured bandwidth (SWR<2) is 24%, and the isolation between the two input ports is 28dB. The simulated gains of the conical and broadside modes are 4dBi and 10dBi respectively. With suitable switching feed networks, the antenna can be reconfigurable in radiation pattern.

Keywords

antenna feeds; antenna radiation patterns; antenna testing; broadband antennas; conical antennas; microstrip antenna arrays; 1.85 GHz; TM₀₁ conical mode; TM₁₁ broadside mode; coupled circular patch antenna; metallic shorting posts; reconfigurable radiation pattern; simulated gains; switching feed networks; tested antenna; wideband L-probe fed patch antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Frequency; Impedance; Patch antennas; Permittivity measurement; Probes; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1552078

Filename

1552078