Design of Microstrip Tapped-Input Interdigital Bandpass Filters

PENG Wei-dong; ZHOU Chao; ZHANG Xi

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Design of Microstrip Tapped-Input Interdigital Bandpass Filters

更新时间：2026-09-04

- Design of Microstrip Tapped-Input Interdigital Bandpass Filters
- Vol. 29, Issue 5, Pages: 197-200(2012)
- 作者机构：
  
  中国民用航空飞行学院航空工程学院, 四川广汉,618307
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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彭卫东, 周超, 张熙. 一种抽头式交指带通滤波器的设计及实现[J]. 微电子学与计算机, 2012, 29(5): 197-200.

PENG Wei-dong, ZHOU Chao, ZHANG Xi. Design of Microstrip Tapped-Input Interdigital Bandpass Filters[J]. 2012, 29(5): 197-200.
彭卫东, 周超, 张熙. 一种抽头式交指带通滤波器的设计及实现[J]. 微电子学与计算机, 2012, 29(5): 197-200. DOI：

PENG Wei-dong, ZHOU Chao, ZHANG Xi. Design of Microstrip Tapped-Input Interdigital Bandpass Filters[J]. 2012, 29(5): 197-200. DOI：

摘要

传统的交指带通滤波器设计采用公式计算归一化自电容和互电容

并通过查表计算得到滤波器的参数

该方法计算繁琐

且计算误差较大.文中介绍了一种根据谐振器的直接耦合原理

利用两终端的外部品质因数和谐振器间的耦合系数设计抽头式交指型带通滤波器的方法.据此

设计了一种用于微波选频的交指滤波器

借助ADS软件对滤波器进行仿真和优化.通过仿真及实测结果的分析对比

进一步给出了设计改进方案.

Abstract

The traditional method to design interdigital filter

which obtains the filter parameters from calculating self-capacitance

mutual capacitance and Look-up table

proved to be complicated and inaccurate.In this paper

a new method utilizing external quality factor and the inter-resonator coupling coefficient was introduced.As a sequent

an interdigital filter was designed for the microwave frequency-selector.The simulation results were compared with the experimental results.Further

the modulated method for bandpass filter was presented in detail.

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