Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity

MAO Yu-ru; LIU Ying; XIE Yong-jun; CHENG Zhi-hua; WANG Xin-bo; LI Yun

doi:10.3969/j.issn.0372-2112.2015.06.020

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Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity

更新时间：2025-07-16

- Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity
- Acta Electronica Sinica Vol. 43, Issue 6, Pages: 1174-1178(2015)
- 作者机构：
  
  1. 北京航空航天大学电子信息工程学院,北京,100191
  2. 西安电子科技大学天线与微波技术重点实验室,陕西,西安,710071
  3. 中国空间技术研究院西安分院空间微波技术国家重点实验室,陕西,西安,710100
  4. 北京航空航天大学电子信息工程学院,北京,100191
  5. 西安电子科技大学天线与微波技术重点实验室,陕西,西安,710071
  6. 中国空间技术研究院西安分院空间微波技术国家重点实验室,陕西,西安,710100
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2015.06.020
  CLC： TN003
- Published：2015
- 稿件说明：
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MAO Yu-ru, LIU Ying, XIE Yong-jun, et al. Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity[J]. Acta Electronica Sinica, 2015, 43(6): 1174-1178.
DOI：

MAO Yu-ru, LIU Ying, XIE Yong-jun, et al. Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity[J]. Acta Electronica Sinica, 2015, 43(6): 1174-1178. DOI： 10.3969/j.issn.0372-2112.2015.06.020.

摘要

针对时域物理光学方法求解无源互调问题的局限性

提出基于场路结合的数值分析方法

建立非线性金属结的等效电路模型并将其引入到全波方法中

通过全波方法与等效电路相结合的方式来分析系统的无源互调干扰.计算实例表明

该方法可以精确地计算由于金属接触非线性引起的无源互调及其作为二次辐射源所激发的电磁场

避免了时域方法在电大尺寸问题上计算的积累误差以及只能对处于远场区的简单微波结构的无源互调效应进行求解的问题.本文提出的场路结合数值分析方法为微波部件无源互调效应的研究提供了新的思路与方法.

Abstract

A new numerical method for the study of passive intermodulation is presented against the limitations of time-domain physical optics(TD-PO).The equivalent circuit model of the metal junction that introduced into the full-wave method is established.The passive intermodulation products and the electromagnetic field excited by passive intermodulation products as secondary sources can be analyzed by full-wave method with nonlinear circuit model.Compared with the time-domain physical optics

the proposed method can eliminate the accumulated error from time iteration on objects large in term of wavelength

and can be applied on complicated microwave structures.The numerical results demonstrate the effectiveness of the method in this paper which provides a new method for the analysis of nonlinear problem.

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