Title :
Rigorous Mode-Matching Method of Circular to Off-Center Rectangular Side-Coupled Waveguide Junctions for Filter Applications
Author :
Zheng, Jingliang ; Yu, Ming
Author_Institution :
Com Dev Ltd., Cambridge
Abstract :
An accurate and efficient method for analyzing circular to multiple off-center rectangular side-coupled waveguide T-junctions is developed based on a rigorous mode-matching technique. The method is very general and not limited by symmetry or other dimensional constraints to the junction. A new way to match fields on the curved interface between subregions is described in detail. The computer code developed based on this theory is highly efficient. The numerical results match with the results obtained by other methods including experimental ones. The method is used to design a side-coupled circular waveguide dual-mode filter.
Keywords :
circular waveguides; mode matching; rectangular waveguides; waveguide filters; waveguide junctions; circular waveguide T-junction; computer code; curved interface; rectangular side-coupled waveguide junctions; rigorous mode-matching method; side-coupled circular waveguide dual-mode filter; Circular waveguide T-junction; mode-matching method;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.908662