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Novel designs of polarization-preserving circular waveguide filters

Published online by Cambridge University Press:  07 January 2011

Jens Bornemann  and
Seng Yong Yu
Jens Bornemann*
Affiliation:
Department of Electrical and Computer Engineering, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6, Canada.
Seng Yong Yu
Affiliation:
Department of Electrical and Computer Engineering, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6, Canada.
*
Corresponding author: J. Bornemann Email: j.bornemann@ieee.org
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Abstract

Novel designs of circular waveguide components for lowpass, highpass, bandpass, and bandstop applications are presented. The filters are formed by cascaded TM11-mode resonator sections which share a common axis, thus preserving the polarizations of input signals due to rotational symmetry. Moreover, the filters are smaller than standard TE11-mode bandpass filters. Basic design considerations are discussed with respect to the connection of TM11-mode resonators through circular irises. Design principles for all four filter types are presented and their performances computed by the coupled-integral equation technique (CIET). All filter performances are verified by the commercially available software package μWave Wizard, and structural dimensions are provided.

Keywords

Circular waveguide filtersLowpass filtersHighpass filtersBandpass filtersBandstop filtersComputer-aided designCircular waveguide modesPolarization
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 2 , Issue 6 , December 2010 , pp. 531 - 536
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2010

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