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Broadband Ka-band rectangular waveguide to substrate integrated waveguide transition

Glogowski, R. ; Zurcher, JFZ ; Peixeiro, C. ; Mosig, JM

Electronics Letters Vol. 49, Nº 9, pp. 602 - 604, April, 2013.

ISSN (print): 1350-911X
ISSN (online): 0013-5194

Scimago Journal Ranking: 0,54 (in 2013)

Digital Object Identifier: 10.1049/el.2013.0388

Abstract
A simple right-angle transition between a rectangular waveguide (RWG) and a substrate integrated waveguide (SIW) is proposed. Two slots etched on the broad wall of the SIW are used to couple the waveguides. To obtain a wide bandwidth of operation the slots have different lengths to create a double resonance behaviour. The proposed component has a simple mechanical configuration with the flange of the standard RWG flush-mounted to the substrate of the SIW. A sample transition is designed to work in the lower part of the Ka-band. The experimental results agree well with numerical predictions. The proposed component has 6.6% bandwidth and insertion loss below 0.5 dB.