Calculation of frequency characteristics for stripline right-angle bend with slant-wise corner cut - based on 3-stage connection and calculation of eigenmode by magnetic wall symmetry

摘要

Stripline right-angle bend with slantwise corner cut is an important component for microwave circuit. Especially, analytical determination of the exact optimum cut is important for computer aided design of microwave circuit. Equivalent network for this structure is given by Foster-type network based on mode theory and can be used for analysis of practical bend characteristics The key step for this analysis is how exactly to calculate eigenmode of the planar junction up to necessary number. Therefore, we propose a new method using three stage cascade-connected stripline configuration and magnetic wall symmetry. In this paper, we explain the above method in detail and calculate the eigenmode for various cut parameters. Finally, frequency characteristics of the right-angle bend with slantwise corner cut are calculated for various cut parameters, resulted in the determination of the optimum cut.