A Novel Microstrip-CPW Fed Planar Slot Antenna With Broadband and Circular Polarization

被引：48

作者：

Xue, Hai-Gao ^{[1
]}

Yang, Xue-Xia ^{[1
]}

Ma, Zhewang ^{[1
]}

机构：

[1] Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷

基金：

中国国家自然科学基金;

关键词：

Broadband; circular polarization; coplanar waveguide (CPW); slot antenna; PATCH ANTENNA; FEED; DESIGN;

D O I：

10.1109/LAWP.2015.2407904

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 novel broadband circularly polarized planar slot antenna with microstrip-CPW fed is proposed in this paper. It consists of a wide rectangular slot and a coplanar waveguide (CPW) feedline, both etched on the ground plane of a dielectric substrate, as well as a microstrip to CPW transition on the reverse plane of the substrate. The microstrip-CPW feed structure is appropriately designed so that the even and odd modes of the CPW are excited with phase difference, and are then fed to the slot antenna to realize wideband circular polarization operation. The mechanism of circular polarization in this design is explained and the detailed parametric study of the antenna is carried out. The measured 3-dB axial-ratio bandwidth is 39.4% (1.98 similar to 2.95 GHz), and 10 dB reflection coefficient bandwidth is 57% (1.73 similar to 3.11 GHz).

引用

页码：1392 / 1395

页数：4

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