A Ka-Band Circular Polarized Waveguide Slot Antenna with a Cross Iris

被引：1
|
作者：
Yoon, Sung-Joon [1 ]
Choi, Jae-Hoon [1 ]
机构：
[1] Hanyang Univ, Dept Elect & Comp Engn, Seoul 133791, South Korea
来源：
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 19期
关键词：
waveguide antenna; slot antenna; circular polarization; axial ratio enhancement; RADIATION;
D O I：
10.3390/app10196994
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Featured Application Segment waveguide slot antenna for a satellite communication and radar. A Ka-band circularly polarized (CP) waveguide slot antenna with a cross iris is proposed. To achieve the CP characteristic (LHCP) in the antenna, a hexagonal shaped cavity is used. The impedance matching is improved by adjusting the sizes of the hexagonal cavity and a rectangular matching cavity. To enhance the axial ratio bandwidth, a cross iris is used with two arms of different lengths. From experimental results, the proposed antenna has a 3 dB axial ratio bandwidth of 6810 MHz (31.72 GHz-38.53 GHz). The -10 dB reflection coefficient bandwidth of the proposed antenna ranges from 31.51 GHz to 39.21 GHz (7700 MHz).
引用
收藏
页码：1 / 15
页数：15
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