Circular Polarization of Periodic Leaky-Wave Antennas With Axial Asymmetry: Theoretical Proof and Experimental Demonstration

被引：84

作者：

Otto, Simon ^{[1
]}

Chen, Zhichao ^{[2
]}

Al-Bassam, Amar ^{[2
]}

Rennings, Andreas ^{[2
]}

Solbach, Klaus ^{[2
]}

Caloz, Christophe ^{[3
]}

机构：

[1] IMST GmbH, D-47475 Kamp Lintfort, Germany

[2] Univ Duisburg Essen, D-45141 Duisburg, Germany

[3] Ecole Polytech, Montreal, PQ H3T 1J4, Canada

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 04期

关键词：

Bloch-Floquet theorem; circular polarization (CP); composite right/left-handed (CRLH) transmission line structures; leaky-wave antenna (LWA); periodic structure; phase quadrature; series-fed patch (SFP); ARRAY;

D O I：

10.1109/TAP.2013.2297169

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：

This paper includes two contributions. First, it proves that the series and shunt radiation components, corresponding to longitudinal and transversal electric fields, respectively, are always in phase quadrature in axially asymmetric periodic leaky-wave antennas (LWAs), so that these antennas are inherently elliptically polarized. This fact is theoretically proven and experimentally illustrated by two case-study examples, a composite right/left-handed (CRLH) LWA and a series-fed patch (SFP) LWA. Second, it shows (for the case of the SFP LWA) that the axial ratio is controlled and minimized by the degree of axial asymmetry.

引用

页码：1817 / 1829

页数：13

共 42 条

[1] Analog Direction of Arrival Estimation Using an Electronically-Scanned CRLH Leaky-Wave Antenna [J].