Summary
International Symposium on Antennas and Propagation
2013
Session Number:TA-P
Session:
Number:TA-P-28
Design of a Broadband Cavity-Backed Multislot Antenna
Jing-yu Yang, Yan-ming Liu, Wen-jun Lu, Hong-bo Zhu,
pp.-
Publication Date:2013/10/22
Online ISSN:2188-5079
Summary:
A novel cavity-backed microstrip-fed multislot antenna (CBMSA) for wideband application is proposed. The antenna is simply fed by a microstrip line terminated with a wide rectangular stub. By incorporating multi-slot configuration and backed cavity, unidirectional beam can be obtained within a broad bandwidth. The return loss, radiation pattern and gain over the antenna’s operational bandwidth have been numerically and experimentally studied. It is shown that the impedance bandwidth of the antenna is from 5 to 10.3 GHz, which is about 69% (for |S11| lower than -10 dB). Good polarization purity with cross-polarization level lower than 18 dB and front-to-back ratio better than 12 dB are obtained. Hence, the antenna can be used in different broadband communication or identification systems.