New feed system for wideband circularly polarised stacked microstrip antennas

被引：7
|
作者：
Nasimuddin
Esselle, K. P.
机构：
[1] Inst Infocomm Res, Singapore 117674, Singapore
[2] Macquarie Univ, Dept Elect, Sydney, NSW 2109, Australia
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2007年 / 1卷 / 05期
关键词：
Microstrip antennas;
D O I：
10.1049/iet-map:20060308
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new feed system is presented for improving the quality and bandwidth of circularly polarised stacked microstrip antennas (CPSMAs). The feed system consists of a microstrip line and a via (or pin) from the microstrip line to a driven patch. A systematic design process to achieve near-optimal CP performance from these antennas is presented. An example design demonstrated a measured 3 dB axial-ratio (AR) bandwidth of 17% and a measured 10 dB return bandwidth of 35%. The measured gain is more than 8 dBic over the 3 dB AR bandwidth. The total height of the antenna is 8.536 mm or 0.156 lambda(o) at 5.5 GHz. The new feed system is found to be very useful for the design of wideband, compact, low-cost, CP microstrip antennas and arrays.
引用
收藏
页码：1086 / 1091
页数：6
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