Title :
Field theoretical computer-aided design of rectangular and circular iris coupled rectangular or circular waveguide cavity filters
Author :
Papziner, Uwe ; Arndt, F.
Author_Institution :
Microwave Dept., Bremen Univ., Germany
fDate :
3/1/1993 12:00:00 AM
Abstract :
The rigorous CAD of a class of rectangular and circular waveguide cavity filters which are coupled by rectangular and/or circular irises is described. The design theory is based on the full-wave mode-matching method for three key building block elements (asymmetric rectangular double-step, asymmetric rectangular-to-circular and circular-to-circular waveguide junctions) associated with the generalized S-matrix technique for composite structures. The waveguide filters may be arbitrarily composed of the key building block elements and the rectangular or circular waveguide sections between them. Finite iris thicknesses, higher-order mode interactions, and asymmetric structures are rigorously taken into account. The theory is verified by measurements
Keywords :
CAD; S-matrix theory; cavity resonators; circular waveguides; electronic engineering computing; microwave filters; passive filters; rectangular waveguides; waveguide components; waveguide theory; S-matrix technique; asymmetric structures; circular iris coupled; circular waveguide cavity filters; composite structures; computer-aided design; field theoretical CAD; finite iris thickness; full-wave mode-matching; higher-order mode interactions; rectangular iris; waveguide filters; Band pass filters; Design automation; Filtering theory; Iris; Multiplexing; Rectangular waveguides; Waveguide components; Waveguide discontinuities; Waveguide junctions; Waveguide theory;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
