Rectangular waveguide section with a pair of antipodal posts: Spectral characteristics

Scattering characteristics of a waveguide section with a pair of antipodal posts are studied. The section is formed by two short rectangular inserts arranged in antipodal position in a cross section of a rectangular waveguide. Influence of changing the posts' dimensions on the section frequency...

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Published in2015 International Conference on Antenna Theory and Techniques (ICATT) pp. 1 - 3
Main Authors Mospan, L. P., Prikolotin, S. A., Kirilenko, A. A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2015
Subjects
attenuation pole
Filtering theory
natural oscillations
Oscillators
Resonant frequency
Resonator filters
Scattering
trapped mode resonance
Waveguide filter
Waveguide theory
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Summary:Scattering characteristics of a waveguide section with a pair of antipodal posts are studied. The section is formed by two short rectangular inserts arranged in antipodal position in a cross section of a rectangular waveguide. Influence of changing the posts' dimensions on the section frequency response is numerically investigated. A pole generation mechanism is examined within the concept of the spectral theory of open waveguide resonators. Attenuation pole generation is demonstrated over the single-mode range and in a wide multi-mode range. It is shown that "spectral" estimations of the pole frequency and bandwidth are more precise than ones obtained within the ordinary `modal' approach. High-accuracy estimation is demonstrated in a wide frequency range.
ISBN:9781479985562
1479985562
DOI:10.1109/ICATT.2015.7136867