Wideband Circularly Polarized Cavity-Backed Asymmetric Crossed Bowtie Dipole Antenna

被引：101

作者：

Tran, Huy Hung ^{[1
]}

Park, Ikmo ^{[1
]}

机构：

[1] Ajou Univ, Dept Elect & Comp Engn, Suwon 443749, South Korea

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2016年 / 15卷

关键词：

symmetric bowtie; broadband; circularly polarized; crossed dipole; single-feed; PATCH ANTENNA; SLOT ANTENNA; BANDWIDTH;

D O I：

10.1109/LAWP.2015.2445939

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 single-feed, cavity-backed, circularly polarized (CP) antenna is designed for wideband wireless applications. The antenna is made up of asymmetric crossed bowtie dipoles and achieves broadband characteristics in terms of impedance and 3-dB axial-ratio (AR) bandwidths. A double vacant-quarter printed ring with orthogonal asymmetric bowties is employed for CP radiation and then combined with slot-mode radiation to significantly enhance the CP operation bandwidth. Measurements of an optimized antenna prototype with an overall size of 0.88A lambda(0), x 0.88 lambda(0) x 0.23 lambda(0),, at 2.4 GHz show that it can yield an impedance bandwidth of approximately 57% and a 3-dB AR bandwidth of approximately 51%. In addition, a unidirectional CP radiation pattern with a high broadside average gain of 9.6 dBic was achieved across the operating bandwidth.

引用

页码：358 / 361

页数：4

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