Terminating Junctions in Single Layer Feed-waveguide for Excitation of the Dominant Quasi TEM-wave in Oversized-rectangular Waveguide

This paper proposes a single-layer feed waveguide with dielectric-filled matching junctions to excite a dominant quasi-TEM mode in oversized-rectangular waveguide with hard-surface sidewalls. Two coupling junctions in cascade with matching L-terminating junctions have been manufactured and the excit...

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Bibliographic Details
Main Authors: Samardzija, M., Kai, T., Hirokawa, J., Ando, M.
Format: Conference Proceeding
Language:English
Subjects:
Delay
Dielectrics
Feeds
Filling
Frequency
Hollow waveguides
Reflection
Slot antennas
Waveguide components
Waveguide junctions
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Summary:This paper proposes a single-layer feed waveguide with dielectric-filled matching junctions to excite a dominant quasi-TEM mode in oversized-rectangular waveguide with hard-surface sidewalls. Two coupling junctions in cascade with matching L-terminating junctions have been manufactured and the excitation of a dominant quasi-TEM mode was confirmed by both far- and near-field measurements at 12 GHz. The ripple in amplitude was less than 3 dB and in phase less than 15 deg. The bandwidth is 2.2% in terms of reflection less than -10 dB for the overall feeding structure
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2006.1711348