An inverted microstrip-fed cavity-backed slot antenna for circular polarization

Author

Li, Quan ; Shen, Zhongxiang

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

190

Lastpage

192

Abstract

This letter presents a compact circularly polarized cavity-backed four-slot antenna using an inverted configuration. The four-element slot antenna is fed by a microstrip network on the topside of the substrate, while a metallic cavity of rectangular shape is placed in the slot side of the substrate. The measured 10-dB return loss and 3-dB axial ratio bandwidths at the center frequency 6 GHz are 26.6% and 15%, respectively. The measured antenna gain for right-hand circular polarization (RHCP) is 8.7 dBi at 6.0 GHz.

Keywords

antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; slot antenna arrays; 6.0 GHz; 8.7 dB; antenna gain; axial ratio bandwidths; cavity-backed slots; circular polarization; compact circularly polarized cavity-backed four-slot antenna; inverted configuration; inverted microstrip-fed cavity-backed slot antenna; metallic cavity; microstrip network; return loss; right-hand circular polarization; Antenna measurements; Bandwidth; Feeds; Frequency measurement; Gain measurement; Impedance; Loss measurement; Microstrip antennas; Polarization; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.807786

Filename

1178242