Numerical Simulation of Electromagnetic-Thermal Effect of Microwave Devices

The lossy dielectric material in microwave devices will lead to thermal effect, which seriously affect the electromagnetic performance of microwave device. Therefore, the coupled analysis of electromagnetic-thermal effect of microwave device is particularly important. In this paper, an efficient numerical approach based on finite element method is developed to analyze the electromagnetic-thermal effect of microwave devices. The electric-field distribution and transient temperature variation are presented. Numerical results of a waveguide verify the effectiveness of the proposed method.