Passive Intermodulation in Microstrip Circuits Due to Dielectric Nonlinearity

ZHAO Xiao-long; YE Ming; ZHANG Song-chang; CAO Zhi; ZHANG Ke-yue; ZHANG An-xue; HE Yong-ning

doi:10.3969/j.issn.0372-2112.2020.12.001

您当前的位置：

首页 >

文章列表页 >

Passive Intermodulation in Microstrip Circuits Due to Dielectric Nonlinearity

更新时间：2025-12-08

- Passive Intermodulation in Microstrip Circuits Due to Dielectric Nonlinearity
- Acta Electronica Sinica Vol. 48, Issue 12, Pages: 2289-2296(2020)
- 作者机构：
  
  西安交通大学电子与信息工程学院,陕西,西安,710049
- 作者简介：
- 基金信息：
  
  Key Research and Development Plan of Jiangsu Province - Industry Foresight and Common Key Technology (No.BE2016159)
- DOI：10.3969/j.issn.0372-2112.2020.12.001
  CLC： TN914
- Published Online：25 December 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
ZHAO Xiao-long, YE Ming, ZHANG Song-chang, et al. Passive Intermodulation in Microstrip Circuits Due to Dielectric Nonlinearity[J]. Acta Electronica Sinica, 2020, 48(12): 2289-2296.
DOI：

ZHAO Xiao-long, YE Ming, ZHANG Song-chang, et al. Passive Intermodulation in Microstrip Circuits Due to Dielectric Nonlinearity[J]. Acta Electronica Sinica, 2020, 48(12): 2289-2296. DOI： 10.3969/j.issn.0372-2112.2020.12.001.

摘要

微带电路无源互调产生机制尚无定论并且缺乏可靠的理论预测方法，本文基于等效受控源模型，建立了基于介电非线性机制的微带线无源互调的解析计算模型，同时，通过对比测试聚四氟乙烯玻纤布介质微带线和空气介质微带线的三阶互调规律验证了介质非线性是微带电路无源互调的一种主要非线性来源，并提取了非线性参数.实验结果显示聚四氟乙烯玻纤布介质微带线比空气介质微带线的传输互调高了约20dB，反射互调高了约15dB，表明介质非线性是聚四氟乙烯玻纤布介质微带线互调的主要来源.同时，根据本文建立的微带线互调计算解析模型，提取聚四氟乙烯玻纤布介质基板的三阶非线性相对介电常数.本文研究方法可以进一步用于其它微带电路无源互调规律计算研究.

Abstract

To reveal the physical mechanism and establish the prediction model of the passive intermodulation (PIM) in the microstrip circuits

we deduce a closed form PIM model based on the dielectric nonlinearity through the dependent-source equivalence

and demonstrate that the dielectric nonlinearity is one of the major causes of PIM in microstrip circuits comparing the PIM phenomenon in PolyTetraFluoroEthylene (PTFE) fiberglass dielectric and air dielectric microstip lines. The nonlinear dielectric constant was derived as well. The experiments show that the PIM levels of the PTFE fiberglass dielectric microstirp line are about 20dB and 15dB larger than that of the air dielectric microstirp line for forward PIM and reverse PIM

respectively

which indicates that the dielectric nonlinearity is the main cause of PIM in the PTFE fiberglass based microstrip line. The third order nonlinear relative dielectric constant is deduced by the analytical PIM model. The model deduced in this paper can also be extended to study the PIM phenomenon in other microstrip circuits.

关键词

Keywords

references

Views

346

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A PBG Microstrip Line with Fractal Characteristics

Numerical Analysis of Passive Intermodulation Due to Metallic Contact Nonlinearity

Analysis of Superconducting Planar Transmission Line by Using the FDTD Method

Related Author

FU Yun-qi

ZHANG Guo-hua

YUAN Nai-chang

MAO Yu-ru

LIU Ying

XIE Yong-jun

CHENG Zhi-hua

WANG Xin-bo

Related Institution

Photonic Crystal Research Center,National University of Defense Technology

School of Electronic and Information Engineering, Beihang University

Key Laboratory of Antenna and Microwave Technology, Xidian University

National Key Laboratory of Space Microwave Technology, China Academy of Space Technology (Xi'an)

School of Electronic and Information Engineering Beihang University Beijing China

⁰