现代电子技术2017，Vol.40Issue(21)：43-45,3.DOI:10.16652/j.issn.1004-373x.2017.21.011
具有谐波抑制的小型化混合环耦合器设计
Design of a miniaturized rat-race coupler with harmonic suppression function
摘要
Abstract
A miniaturized rat-race coupler with harmonic suppression function is proposed,in which the T-type structure re-places each λ 6 transmission line in 7λ 6 rat-race loop to reduce the dimension of the rat-race loop,and the out-of-band trans-mission zero is introduced through the parallel open-circuit stub in T-type structure to suppress the third harmonic. In order to verify the validity of the theory,a miniaturized rat-race loop is designed,whose central working frequency is 1 GHz. The results of material object test and electromagnetic simulation are given. The test results show that the rat-race loop has perfect harmonic suppression function,and its insertion attenuation near the third harmonic is higher than 30 dB while the working characteristic of the coupler maintains at 3 dB. The dimension of the proposed rat-race coupler is 34.2% of the traditional rat-race coupler. The coupler has broad application prospect.关键词
混合环耦合器/小型化/谐波抑制/开路枝节Key words
rat-race coupler/miniaturization/harmonic suppression/open-circuit stub分类
信息技术与安全科学引用本文复制引用
祝子辉,王钟葆..具有谐波抑制的小型化混合环耦合器设计[J].现代电子技术,2017,40(21):43-45,3.基金项目
国家自然科学基金(61401056,61571075) （61401056,61571075）
中央高校基本科研业务费专项(3132016320) （3132016320）
