DUAL-SQUARE-RING-SHAPED SLOT ANTENNA FOR WIDEBAND CIRCULARLY POLARIZED RADIATION

被引:18
|
作者
Nasimuddin [1 ]
Qing, Xianming [1 ]
Chen, Zhi Ning [1 ,2 ]
机构
[1] Inst Infocomm Res, Singapore 138632, Singapore
[2] Natl Univ Singapore, Singapore 119077, Singapore
关键词
circularly polarized antenna; circular polarization; slot antenna; slot; microstrip feed-line; wideband;
D O I
10.1002/mop.28663
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 compact dual-square-ring-shaped slot antenna using a microstrip feed line is proposed for wideband circularly polarized (CP) radiation. The antenna consists of a combined dual-square-ring-shaped slot along the diagonal direction and a microstrip feed-line along with stub in the orthogonal direction. The slot and feeding structures are fabricated on the opposite planes of a low cost FR4 substrate. The stub width and a dual-square-ring-shaped slot are optimized for wideband CP radiation with good impedance matching. The measured 3-dB axial ratio and 10-dB return loss bandwidths of the proposed antenna are 47% (2.1-3.4 GHz) and 75% (1.92-4.25 GHz), respectively. The measured gain is more than 2.0 dBic over the 3-dB axial ratio bandwidth. (C) 2014 Wiley Periodicals, Inc.
引用
收藏
页码:2645 / 2649
页数:6
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