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Design of Narrow Wall Windows in a Waveguide to Feed Partially-Dielectric-Filled Oversized-Rectangular Waveguide Based on 2-Dimensional Analyses of Two Orthogonal Directions

Miroslav SAMARDIJA, Jiro HIROKAWA, Makoto ANDO

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Summary :

A series of windows in the narrow wall of a fully-dielectric-filled rectangular waveguide to feed partially-dielectric-filled oversized-rectangular waveguide is presented. The overall structure is single-layer and 3-dimensional however; the waveguide which is uniform along the height is analyzed by the 2-dimensional method of moments and the oversized waveguide which is uniform in the longitudinal direction of the waveguide is analyzed by the 2-dimensional mode matching. It is found that utilizing simple mode conversions between the two orthogonally uniform structures is sufficient for obtaining the results similar to those of a 3-dimensional solver HFSS. The parameters for the windows designed for a uniform input division are presented. A simulation shows that a 12 window array provides a 3.5% bandwidth in terms of reflection below -20 dB. The uniform excitation of the quasi-TEM wave is confirmed in the 60 GHz band by measuring a uniform aperture field in amplitude and phase over the slotted oversized-waveguide.

Publication
IEICE TRANSACTIONS on Communications Vol.E93-B No.4 pp.871-878
Publication Date
2010/04/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E93.B.871
Type of Manuscript
PAPER
Category
Devices/Circuits for Communications

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