Compact Circularly Polarized Antenna Based on Quarter-Mode Substrate Integrated Waveguide Sub-Array
Compact Circularly Polarized Antenna Based on Quarter-Mode Substrate Integrated Waveguide Sub-Array
复制标题
DOI：
10.1109/tap.2013.2291574
复制
发表时间：
2014-02
影响因子：
5.7
通讯作者：
C. Jin;Z. Shen;Rui Li;A. Alphones
中科院分区：
文献类型：
--
作者：
C. Jin;Z. Shen;Rui Li;A. Alphones
本文提出了一种基于四分之一模基片集成波导子阵的小型圆极化平面天线。该天线的工作原理和设计准则进行了讨论的援助等腰直角三角形腔体的两个磁侧壁和一个电侧壁。确定了三角形腔的模式解，计算了三角形腔的谐振频率。制作了所设计的天线并测量了其辐射特性。实测结果与预测值吻合较好。结果表明，该结构是一种简单、紧凑的高性能圆极化天线。
A compact and circularly polarized planar antenna is presented in this communication based on a quarter-mode substrate integrated waveguide sub-array. The operating principle and design guidelines of the proposed antenna are discussed with the aid of an isosceles right triangular cavity with two magnetic side walls and one electric side wall. The mode solutions are determined and the resonant frequencies of the triangular cavity are calculated. The designed antenna is fabricated and its radiation characteristics are measured. Measured results are in good agreement with predicted ones. It is demonstrated that the proposed structure is a simple and compact candidate of high-performance circularly polarized antenna.