Analysis of Electro-Thermal Characterization of Substrate Integrated Suspended Line

It is very important to analyze the electro-thermal characterization of the transmission line and predict the temperature in the design of high-power circuits. As an emerging transmission line, substrate integrated suspended line (SISL) has been widely studied and applied. The electro-thermal characterization of SISL has been studied for the first time in this paper. The thermal model of SISL is analyzed and electro-thermal simulation is performed. The temperature of SISL under high power is measured, and the measurement and simulation results verify the accuracy of the theoretical analysis. The methods and conclusions studied in this paper can be used to predict the average power handling capability (APHC) of high-power circuits based on SISL platform.