Modeling and Analysis of the Effect of Signal Frequency on the Contact Surface Temperature of Coaxial Connectors

Increases in signal frequency can result in contact surface temperature rises in coaxial connectors. Such increases in temperature on the contact surface of coaxial connectors may negatively impact the quality of high frequency signal transmission in communication systems. In this paper, the effect of signal frequency on the contact surface temperature of coaxial connectors at high frequency was modeled and analyzed. A model was developed of the structural characteristics of the contact surface of a connector designed for high frequency applications. Using this model, finite element analysis (FEA) simulations were conducted to evaluate the influence of surface roughness on the resistance and capacitance of the connector contact surface. From these simulations, the relationship between the signal frequency and temperature of the connector contact surface was obtained. This study provides a reference for the selection of coaxial connectors and the development of low temperature rise connector designs.