A circularly polarized stacked electromagnetically coupled patch antenna

Author

Chung, Kwok L. ; Mohan, Ananda S.

Author_Institution

ICT Group, Univ. of Technol., Sydney, NSW, Australia

Volume

52

Issue

5

fYear

2004

fDate

5/1/2004 12:00:00 AM

Firstpage

1365

Lastpage

1369

Abstract

In this communication, we present a high-performance circularly polarized (CP) stacked electromagnetically coupled patch antenna and its subarray at X band. In addition to low boresight axial-ratios, the subarray has measured 10-dB impedance and 3-dB axial-ratio bandwidths of 25.6% and 23.5% respectively as compared to the measured 20.2% and 8.0% for a single element. The mutual coupling for this element is shown to be lower than other reported stacked patch antennas and obtained a gain (>10 dbic) bandwidth of 23.5%. The calculated antenna efficiency is 89% around center frequency for the single element whereas the subarray has an overall efficiency of >71% (-1.5 dB) over 21% bandwidth.

Keywords

antenna feeds; antenna radiation patterns; electromagnetic coupling; electromagnetic wave polarisation; microstrip antenna arrays; AXBW; EMCP; SFCP; X-band; antenna efficiency; axial-ratio bandwidth; electromagnetically coupled patch antenna; mutual coupling; singly fed circularly polarized patch antenna; Antenna measurements; Bandwidth; Dielectric substrates; Electromagnetic coupling; Electromagnetic measurements; Electromagnetic wave polarization; Feeds; Frequency; Impedance measurement; Patch antennas; A$_rm x$BW; Antenna efficiency; EMCP antennas; SFCP; axial-ratio bandwidth; patch antennas; singly fed circularly polarized; stacked patch antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2004.827490

Filename

1296849