悬置微带线滤波器的尺寸综合设计方法

doi:10.16180/j.cnki.issn1007-7820.2019.04.005

电子科技 ›› 2019, Vol. 32 ›› Issue (4): 20-23.doi: 10.16180/j.cnki.issn1007-7820.2019.04.005

悬置微带线滤波器的尺寸综合设计方法

李刚¹,胡旭²

^1. 湖北文理学院物理与电子工程学院,湖北襄阳 441053
^2. 湖北文理学院经济与政法学院,湖北襄阳 441053

收稿日期:2018-03-18 出版日期:2019-04-15 发布日期:2019-03-27
作者简介:李刚(1983-),男,博士,讲师。研究方向:微波无源器件设计、电磁兼容和嵌入式系统。
基金资助:
湖北省自然科学基金(2015CFB663);2017年襄阳市科技研究与开发一般项目

Dimension Synthesis Method of Suspended Substrate Stripline Filter

LI Gang¹,HU Xu²

^1. School of Physics and Electronic Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
^2. School of Economics, Political Science & Law, Hubei University of Arts and Science, Xiangyang 441053, China;

Received:2018-03-18 Online:2019-04-15 Published:2019-03-27
Supported by:
Natural Science Foundation of Hubei Province(2015CFB663);Xiangyang General Science and Technology Project in 2017

摘要/Abstract

摘要：

针对基于经验公式设计的悬置微带线滤波器精度不高的问题,文中提出了悬置微带线滤波器的尺寸综合设计方法。建立悬置微带线滤波器的传输线谐振腔和耦合结构的等效电路模型并详细分析了耦合结构电抗斜率对传输线谐振腔的影响。通过全波仿真软件准确提取耦合结构的电抗斜率参数,逐级修正传输线谐振腔的物理长度,避免了耗时的全波仿真优化。最后,设计了一款5阶切比雪夫响应的悬置微带线滤波器,仿真结果与理论结果吻合良好,验证了设计方法的正确性和有效性。

关键词: 滤波器, 悬置微带线, 等效电路模型, 计算机辅助设计, 电路仿真, 滤波器综合

Abstract:

As for the low precision problem of designing the Suspended Substrate Stripline filter based on empirical formulas, this paper presented a dimension synthesis method of the SSS filter. The equivalent circuit model of the resonant cavity and coupling structure of the SSS filter was established and the influence of the reactance slope of the coupling structure on the resonant cavity was analyzed in detail. Through the full wave simulation, the reactance slope parameters of the coupling structure could be accurately extracted and the physical length of the transmission line cavity was corrected step by step without time-consuming full wave optimization. Finally, A five orders SSS filter with Chebyshev response was designed. The simulation results agreed well with the theoretical results, which verified the validity of the method.

Key words: filter, suspended substrate stripline, the equivalent circuit model, computer aided design, circuit simulation, filter synthesis

中图分类号:

TN713.5

李刚,胡旭. 悬置微带线滤波器的尺寸综合设计方法[J]. 电子科技, 2019, 32(4): 20-23.

LI Gang,HU Xu. Dimension Synthesis Method of Suspended Substrate Stripline Filter[J]. Electronic Science and Technology, 2019, 32(4): 20-23.

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S/mm	Φ₁/mm	Φ₂/mm	L/mm
S₀₁=0.021	Φ_{1_01}=0.004	Φ_{2_01}=-2.899	L₁=16.371
S₁₂=1.758	Φ_{1_12}=0.282	Φ_{2_12}=-0.372	L₂=17.983
S₂₃=2.140	Φ_{1_23}=0.404	Φ_{2_23}=-0.075	L₃=18.193
S₃₄=2.140	Φ_{1_34}=0.404	Φ_{2_34}=-0.075	L₄=17.983
S₄₅=1.758	Φ_{1_45}=0.282	Φ_{2_45}=-0.372	L₅=16.371
S₅₆=0.021	Φ_{1_56}=0.004	Φ_{2_56}=-2.899

悬置微带线滤波器的尺寸综合设计方法

Dimension Synthesis Method of Suspended Substrate Stripline Filter

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