Design of a Broadband Cruciform Substrate Integrated Waveguide Coupler

Mitsuyoshi KISHIHARA  Isao OHTA  Kensuke OKUBO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.2   pp.248-250
Publication Date: 2011/02/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.248
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
millimeter-wave technology,  passive components,  couplers,  substrate-integrated waveguide (SIW),  planar circuit approach,  

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Summary: 
A broadband cruciform substrate integrated waveguide coupler is designed based on the planar circuit approach. The broadband property is obtained by widening the crossed region in the same way as rectangular waveguide cruciform couplers. As a result, a 3 dB coupler with fractional bandwidth of 30% is realized at 24 GHz.