Reflection Characteristics of Microstrip Base on Finite Element Method

摘要

A detailed study on the reflection characteristics of microstrip line with right angle bend cut by 30° on the Printed Circuit Board (PCB) based on Finite Element Method (FEM) is presented. We discuss two cases, respectively. Firstly, keeping the microstrip width and permittivity as constant, we focus on reflection characteristics of microstrip with different thickness of the dielectric material. Secondly, maintaining the microstrip width and dielectric material thickness, we calculate reflection characteristics of microstrip with different permittivity. Finally, we calculate the reflection parameters of a special case above with different cut size. It is found that there exists an optimum cut size that minimizes reflection in high frequency band.