Full-Wave Simulation of Contact-Nonlinearity-Induced Passive Intermodulation Using a Nonlinear Interface Boundary Model

被引：0

作者：

Zhao, Xiaolong ^{[1
]}

He, Yongning ^{[1
]}

Zhang, Anxue ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Microelect, Key Lab Micronano Elect & Syst Integrat Xian City, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Informat & Commun Engn, Xian 710049, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2024年 / 34卷 / 06期

关键词：

Finite difference methods; Rectangular waveguides; Metals; Flanges; Mathematical models; Boundary conditions; Surface impedance; Contact nonlinearity; finite-difference time domain (FDTD); linearity nonlinearity separation (LNS); nonlinear interface boundary condition; passive intermodulation (PIM);

D O I：

10.1109/LMWT.2024.3381953

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Metal contact generates weak nonlinearity in the contact interface causing passive intermodulation (PIM) for microwave components. In this letter, we proposed a nonlinear interface boundary model to describe the metal contact nonlinearity and utilized the linearity-nonlinearity separation (LNS) finite-difference time-domain (FDTD) method to implement the full-wave PIM simulation. A PIM level of a rectangular waveguide was calculated, which is consistent with the analytical theory and the experimental results. Electromagnetic (EM)-field distribution of the PIM signal was also extracted, which visualizes the PIM signal propagation in the rectangular waveguide.

引用

页码：583 / 586

页数：4

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