DesignofWidebandHarmonicRejectionAntenna宽带谐波抑制天线设计.PDF

Journal of Antennas 天线学报, 2017, 6(1), 1-6 Published Online March 2017 in Hans. /journal/ja /10.12677/ja.2017.61001 Design of Wideband Harmonic Rejection Antenna Yufeng Yin, Min Wang, Nuo Xu, Wen Wu JGMT Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing Jiangsu th nd th Received: May 4 , 2017; accepted: May 22 , 2017; published: May 25 , 2017 Abstract A broadband filtering antenna is proposed for the rectifying antenna of microwave energy har- vesting systems in this paper. The antenna is composed of a C-CMRC filter and a multi-layer U-slot microstrip antenna. The bandwidth is broadened by adding air layer and loading U-slot on the patch. Then, the 2nd and 3rd harmonic are suppressed by loading low-pass filter on the feed-line. The measured results show that an impedance bandwidth from 2.2 GHz to 2.6 GHz, i.e., 16% is ob- tained. The measured and simulated results show that the return loss is less than 1dB at the 2nd and the 3rd harmonic frequencies. Keywords Broadband Harmonic Rejection, Filtering Antenna, Microstrip Antenna 宽带谐波抑制天线设计 殷玉凤，汪 敏，徐 诺，吴 文 南京理工大学JGMT 国防重点学科实验室，江苏 南京 收稿日期：2017年5月4 日；录用日期：2017年5月22 日；发布日期：2017年5月25 日 摘 要 本文针对微波能量采集整流天线的应用，设计了一款宽带滤波天线。该天线由C-CMRC低通滤波器和多 层结构的U型缝微带天线组成。首先通过加空气层和在贴片上加载U形缝隙展宽了天线的带宽，然后在馈 线上加载低通滤波器对二次和三次谐波进行抑制。天线的实测工作频率范围为2.2 GHz~2.6 GHz，相对 带宽约为16%。实测和仿真结果表明天线在二次和三次谐波频率处的回波损耗均小于1 dB 。 文章引用: 殷玉凤, 汪敏, 徐诺, 吴文. 宽带谐波抑制天线设计[J]. 天线学报, 2017, 6(1): 1-6. /10.12677/ja.2017.61001 殷玉凤 等 关键词 宽带谐波抑制，滤波天线，微带天线 Copyright © 2017 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution Internati