新型双模滤波器设计  

Design of Dual-mode Filter in New Structure

作　　者：范如东[1] 万开奇 陈永任[1] 袁杰 FAN Rudong;WAN Kaiqi;CHEN Yongren;YUAN Jie

机构地区：[1]中国电子科技集团公司第二十四研究所

出　　处：《科技视界》2020年第2期43-45,共3页Science & Technology Vision

摘　　要：利用波导具有传播多种模式的特性实现波导滤波器的小型化。本文中双模腔体中的谐振块由两个呈十字型排列的矩形脊构成,其中一个直角通过倒角变为45°。通过这种结构,两种简并模式可以沿着正交方向产生耦合。据此,利用简并模式及交叉耦合的特点,设计了一种结构新颖的四阶双模脊波导带通滤波器,中心频率在13GHz,仿真结果达到理想要求,证明了这种设计的有效性。Waveguide can transport a variety of modes of the electromagnetic wave. Miniaturization of the waveguide filter can be realized by this feature. In this paper, the resonance ? blocks in the cavity of the dual-mode filter consists of two cross-shaped arrangement of rectangular ridges, and a cross rotated by 45 °. Two degenerate modes can be generated along the direction orthogonal coupling with this structure. Using the characteristics of degenerate mode and cross-coupling, a novel structure of the fourth-order double ridge waveguide bandpass filter can be designed. The center frequency of the filter is 13 GHz. Good results are obtained.

关 键 词：双模滤波器 交叉耦合 脊波导 

分 类 号：TN713[电子电信—电路与系统]