A wideband circularly polarized reconfigurable patch antenna excited by L-shaped probes

Author

Yang, Steven S L ; Luk, K.M.

Author_Institution

City Univ. of Hong Kong, Kowloon

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

81

Lastpage

84

Abstract

A wideband circularly polarized reconfigurable microstrip patch antenna fed by L- shaped probes is proposed. The L-shaped probes are connected to a matching network underneath the ground plane, which two polarizations, right hand circular polarization (RHCP) or left hand circular polarization (LHCP), could be excited. With the use of PIN diodes and some biasing/RF components, an electrical switch has been designed. The antenna is capable to radiate either RHCP or LHCP by a single feeding port, with suitable biasing voltage on the switches. Preliminary study found that the antenna attains a bandwidth of about 20% with VSWR<2 and axial ratio<3 dB.

Keywords

antenna feeds; broadband antennas; microstrip antennas; p-i-n diodes; polarisation; L-shaped probes; PIN diodes; left hand circular polarization; matching network; right hand circular polarization; wideband reconfigurable patch antenna; Antenna feeds; Bandwidth; Broadband antennas; Microstrip antennas; Patch antennas; Polarization; Probes; Radio frequency; Switches; Voltage; Reconfigurable antenna; circular polarization; wideband antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-4-902339-08-6

Electronic_ISBN

978-4-902339-11-6

Type

conf

DOI

10.1109/APMC.2006.4429384

Filename

4429384