Title :
Mode matching analysis of multiple offset coaxial irises in circular waveguide
Author :
Orfanidis, A.P. ; Kyriacou, G.A. ; Samaras, T. ; Sahalos, J.N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Demokritos Univ. of Thrace, Xanthi, Greece
Abstract :
The step junction between a circular and an eccentric coaxial waveguide is analysed using a rigorous mode matching technique along with the Graff´s addition theorem for cylindrical functions. The necessary expressions including the coupling integrals are considered analytically. Based on this analysis the off-centred coaxial iris in a circular waveguide is studied. Its properties are pointed out and the single and dual irises on the same diaphragm features are exploited for the design of bandpass filters.
Keywords :
band-pass filters; circular waveguides; coaxial waveguides; electromagnetic coupling; integral equations; mode matching; waveguide filters; waveguide junctions; waveguide theory; Graff addition theorem; bandpass filter design; circular waveguide; coupling integrals; cylindrical functions; diaphragm features; dual irises; eccentric coaxial waveguide; mode matching analysis; multiple offset coaxial irises; off-centred coaxial iris; single irises; step junction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040033
