舰船电子工程2025，Vol.45Issue(2)：74-77,4.DOI:10.3969/j.issn.1672-9730.2025.02.016
应用于S波段的双频带通滤波器
Dual-band Bandpass Filter for S-band
赵殷缘 1张斌珍 1段俊萍 1王佳云1
作者信息
- 1. 中北大学仪器科学与动态测试教育部重点实验室 太原 030051
- 折叠
摘要
Abstract
The BPF proposed in this article consists of a cross finger coupling structure and five E-type resonator units.The equivalent circuit model of this structure is constructed and analyzed by using odd and even mode theory.By adjusting the length of the E-type resonator branches,the center frequency of the two differential mode(DM)passbands can be controlled.The cross fin-ger coupling structure achieves the required external coupling between two frequency bands and adds out of band suppression.Ac-cording to the measurement results,relative bandwidths of 38.5%and 10.63%are obtained at 2.7 GHz and 4 GHz frequencies,re-spectively,and the DM return loss of both bands is greater than 15.6 dB.关键词
双频段BPF/奇偶模理论/E型谐振器/叉指耦合Key words
dual-band BPF/odd even mode theory/E-type resonator/interdigital coupling分类
电子信息工程引用本文复制引用
赵殷缘,张斌珍,段俊萍,王佳云..应用于S波段的双频带通滤波器[J].舰船电子工程,2025,45(2):74-77,4.
