Millimeter-Wave Bowtie Excited Cavity-Backed Antenna With Improved Aperture

被引：8
|
作者：
Qu, Shi-Wei [1 ]
Ng, Kung Bo [2 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Engn, Chengdu 611731, Peoples R China
[2] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2012年 / 11卷
关键词：
Bowtie antennas; broadband antennas; cavity-backed antennas (CBAs); millimeter waves; WIDE-BAND; PATTERN;
D O I：
10.1109/LAWP.2012.2204719
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 broadband millimeter-wave cavity-backed antenna, excited by a rounded bowtie dipole, is reported in this letter. To improve the radiation patterns and the broadside gains, its aperture is optimized by cutting the sections with higher-order modes at lower frequencies away from a large aperture, forming a specific open cavity structure. Simulations show that the antenna can present an impedance bandwidth from 28 to over 50 GHz for SWR <= 2, and a bandwidth from 28 to 49 GHz for -10-dB sidelobe level. Measurements agree reasonably well with simulations. Comparisons between the antennas with and without the improved aperture in terms of electric field distribution and radiation patterns clearly show performance enhancement.
引用
收藏
页码：697 / 700
页数：4
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