Array antenna composed of circularly polarized dielectric resonator antennas

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.789128

M. Haneishi, Bing Wu

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引用次数: 5

Abstract

Previously, a dielectric resonator antenna (DRA) including circularly polarized DRA (CP-DRA) has been studied by many researchers, since it can be used as an efficient radiator in the high frequency region. A new type of CP-DRA element fed by an asymmetric cross-slot is proposed here. This type of CP-DRB is probably one of the simplest devices for producing circular polarization at or near the millimeter-wave region. This paper presents the radiation properties of a new type of CP-DRB element together with the design technique of a DRA array composed of a pair of CP-DRAs. In order to evaluate the performance, some DRA elements and its arrays were fabricated and tested at X-band. The 3-dB axial-ratio bandwidth obtained from this new type of DRA array was about 20% at X-band, and it had an extremely broadband performance compared to that of a normal array antenna. Therefore, the DRA array proposed here is considered to be an effective model as a broadband circularly polarized array.

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由圆极化介质谐振器天线组成的阵列天线

由于圆极化介质谐振器天线(CP-DRA)可以作为高频区域的高效辐射体，因此在此之前，许多研究者对其进行了研究。本文提出了一种新型的非对称交叉槽馈电的CP-DRA单元。这种类型的CP-DRB可能是在毫米波区域或附近产生圆偏振的最简单的装置之一。本文介绍了一种新型CP-DRB元件的辐射特性，以及由一对CP-DRB组成的DRA阵列的设计方法。为了评估其性能，制作了一些DRA元件及其阵列，并在x波段进行了测试。该阵列在x波段获得的3db轴比带宽约为20%，与普通阵列天线相比具有极高的宽带性能。因此，本文提出的DRA阵列被认为是一种有效的宽带圆极化阵列模型。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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