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Feed through an Aperture to a Post-Wall Waveguide with Step Structure Takafumi KAI Jiro HIROKAWA Makoto ANDO Publication IEICE TRANSACTIONS on Communications Vol.E88-B No.3 pp.1298-1302 Publication Date: 2005/03/01 Online ISSN: DOI: 10.1093/ietcom/e88-b.3.1298 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword: post-wall waveguide, millimeter-wave bands, aperture, Full Text: PDF(950KB)>>
Summary: We propose an aperture coupling E-bend with step structure as a robust post-wall waveguide interface to an external standard waveguide in which the posts are separated from the aperture. A 61.25 GHz model transformer gives 11.4% bandwidth for the reflection below -25 dB by using a 1.2 mm-height dielectric substrate. We have compared the mechanical tolerances of both the conventional straight structure and the proposed step structure. The step structure is more robust against mechanical errors than the conventional one. Another advantage is that the accuracy of the analysis model for the post-wall to metal-wall replacement is enhanced for the step structure. | |||||
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