高性能双通带滤波器的快速设计方法

doi:10.19665/j.issn1001-2400.2020.05.017

西安电子科技大学学报 ›› 2020, Vol. 47 ›› Issue (5): 130-136.doi: 10.19665/j.issn1001-2400.2020.05.017

• 信息与通信工程&网络空间安全 • 上一篇下一篇

高性能双通带滤波器的快速设计方法

许彤通(),相征

西安电子科技大学通信工程学院,陕西西安 710071

收稿日期:2020-03-25 出版日期:2020-10-20 发布日期:2020-11-06
作者简介:许彤通(1992—),男,西安电子科技大学博士研究生,E-mail: ttxu@stu.xidian.edu.cn
基金资助:
陕西省自然科学基础研究计划(2019JQ-383)

Fast design method for the high-performance dual-passband filter

XU Tongtong(),XIANG Zheng

School of Communications Engineering, Xidian University, Xi’an 710071, China

Received:2020-03-25 Online:2020-10-20 Published:2020-11-06

摘要/Abstract

摘要：

为了提高双通带滤波器的设计效率,基于双工器理论研究了双通带滤波器耦合矩阵的提取方法,并设计了一款双通带腔体滤波器。首先分析了耦合矩阵基本理论; 然后研究了基于双工器的耦合矩阵提取方法; 最后通过电路模型对相应的耦合矩阵进行理论验证,并利用电磁仿真软件进行滤波器的设计仿真。仿真结果表明,这种双通带滤波器具有通带灵活可控、插入损耗小、带外抑制好等特点,可提高双通带滤波器的设计效率。

关键词: 双工器, 双通带滤波器, 耦合矩阵

Abstract:

In this paper, in order to improve the efficiency of designing the dual-passband filter, the extraction method of the coupling matrix of the dual-passband filter is studied based on the duplexer theory, and a dual-passband cavity filter is designed. First, the basic theory of the coupling matrix is analyzed, and then the method for extracting the coupling matrix based on the duplexer is studied. Finally, the corresponding coupling matrix is verified theoretically by the circuit model, and the design and simulation of the filter are performed using electromagnetic simulation software. The simulation results show that the dual-passband filter designed in this paper has the characteristics of a flexible and controllable passband, a low insertion loss, and good out-of-band rejection. The proposed method can improve the efficiency of designing the dual-passband filter.

Key words: diplexer, dual-passband filter, coupling matrix

中图分类号:

TN802

许彤通,相征. 高性能双通带滤波器的快速设计方法[J]. 西安电子科技大学学报, 2020, 47(5): 130-136.

XU Tongtong,XIANG Zheng. Fast design method for the high-performance dual-passband filter[J]. Journal of Xidian University, 2020, 47(5): 130-136.

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指标名称	指标值	与设计指标吻合程度
通带频率/GHz	1.98~2.09 2.18~2.30	吻合
回波损耗/dB	≥17	吻合
插入损耗/dB	≤0. 5	吻合
带外抑制	≥40 dB @(1.9 GHz) ≥40 dB @(2.39 GHz) ≥30 dB @(2.15 GHz)	优于设计指标

高性能双通带滤波器的快速设计方法

Fast design method for the high-performance dual-passband filter

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[1]	李刚. 频变交叉耦合滤波器的矩阵优化综合方法[J]. 西安电子科技大学学报, 2019, 46(3): 154-159.
[2]	陈建忠;梁昌洪;陈佳;李奇. 一种基于曲线拟合的微波滤波器参数提取方法[J]. J4, 2011, 38(4): 101-105+123.
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