Title :
Analysis of the junction between smooth and corrugated cylindrical waveguides in mode converters
Author :
Silva, Luiz C Da ; Branco, M. G Castello
Author_Institution :
Pontificia Univ. Catolica do Rio de Janeiro, Brazil
fDate :
6/1/1990 12:00:00 AM
Abstract :
A method for determining the scattering matrix of the junction between smooth and corrugated cylindrical waveguides is developed. The model is based on expanding the modal fields for the corrugated waveguide into eigenfunctions of the transmission matrix of a waveguide unit cell. This method, used in conjunction with usual techniques for evaluating the scattering matrix of mode converters, is shown to improve the precision of results obtained by rendering uniform the accuracy of the models applied in the calculations. The analysis is now valid for any size of corrugation depth, and the frequency band, of applicability is enlarged accordingly
Keywords :
S-matrix theory; circular waveguides; eigenvalues and eigenfunctions; waveguide couplers; waveguide theory; corrugated cylindrical waveguides; corrugation depth; eigenfunctions; frequency band; modal fields; mode converters; scattering matrix; smooth cylindrical waveguides; transmission matrix; waveguide unit cell; Bandwidth; Character generation; Eigenvalues and eigenfunctions; Frequency; Helium; Matrix converters; Scattering; Tellurium; Transmission line matrix methods; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
