Suppression of the Slot-Mode Radiation in a Slitted Waveguide Using Periodic Slot Perturbations

Transverse perturbations in the form of periodic slots in the narrow-wall are employed to suppress the slot-mode radiation in a slitted waveguide. The presence of the perturbations alters the fast wave supported in an unperturbed slot to a slow wave. Slitted waveguides with and without perturbations...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 8; pp. 550 - 553
Main Authors Sutinjo, A., Okoniewski, M., Johnston, R.H.
Format Journal Article
LanguageEnglish
Published New York IEEE 2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna measurements
Antenna radiation patterns
Antenna theory
Antennas
Aperture antennas
Eigenvalues and eigenfunctions
Leaky wave antennas
leaky-wave antennas (LWAs)
Microwave antennas
Perturbation
Rectangular waveguides
Reduction
Resonance
Simulation
Slow waves
Transmission line measurements
waveguide antennas
Waveguides
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Summary:Transverse perturbations in the form of periodic slots in the narrow-wall are employed to suppress the slot-mode radiation in a slitted waveguide. The presence of the perturbations alters the fast wave supported in an unperturbed slot to a slow wave. Slitted waveguides with and without perturbations were compared in full-wave simulations and in measurements. It will be shown that significant and consistent reduction of the slot-mode radiation is achieved with the perturbations.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2009.2022774