电子学报2018，Vol.46Issue(3)：595-601,7.DOI:10.3969/j.issn.0372-2112.2018.03.012
基于微带贴片谐振器的高选择性双模双通带带通滤波器的研究
Study of High-Selectivity Dual-Mode Dual-Band Bandpass Filters Based on Microstrip Patch Resonator
摘要
Abstract
High-selectivity dual-mode dual-band bandpass filters using microstrip patch resonator and the method of mode analysis are proposed. The closed form solutions of the guided mode field of the microstrip patch resonator and mode constitution are given. The microstrip patch resonator is fed by microstrip quasi-rectangular rings which also work in two degenerate modes, providing the second passband. Compared with the existing dual band bandpass filters, the full wave analysis and measured results show that the number of transmission zeros of the filters designed in this paper is increased by two times. The filter has eleven transmission zeros, suppressing the parasitic passband. The band rejection reaches about 20dB while the insertion loss is only 1.2dB. Furthermore, these structures are suitable for the miniaturization of filters.关键词
双通带/双模/带通滤波器/微带贴片谐振器/高选择性/高带外抑制性Key words
dual-band/dual-mode/bandpass filter/microstrip patch resonator/high-selectivity/high-rejection分类
信息技术与安全科学引用本文复制引用
王树兴,吴瑛,周东方,张德伟,张毅..基于微带贴片谐振器的高选择性双模双通带带通滤波器的研究[J].电子学报,2018,46(3):595-601,7.基金项目
核高基重大项目(No.2015-ZX01010001-003) （No.2015-ZX01010001-003）
