Simulation of Third-order Inorganic Intermodulation on a Rough Contact Surface

Abstract

In this paper, the mechanism of passive intermodulation on the metal contact surface is analyzed. According to the roughness contact model, the corresponding equivalent circuit model is established. The influence of metal contact surface roughness, contact area, mechanical loading, and excitation electromagnetic field strength on passive intermodulation power is studied with numerical simulation using ADS. The suppression measures to reduce passive intermodulation products in engineering applications are proposed.