Analysis of Post-Wall Waveguide Based on H-Plane Planar Circuit Approach

Mitsuyoshi KISHIHARA  Isao OHTA  Kensuke OKUBO  Jiro YAMAKITA  

IEICE TRANSACTIONS on Electronics   Vol.E92-C   No.1   pp.63-71
Publication Date: 2009/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E92.C.63
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and its Application)
parallel-plate waveguides,  substrate integrated waveguide (SIW),  waveguide discontinuities,  passive circuits,  

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In this paper, we suggest a method of analyzing the post-wall waveguide (PWW) or the substrate integrated waveguide (SIW) by applying the analytical technique of the H-plane waveguide discontinuities based on the planar circuit approach. The analytical procedure consists of the derivation of the mode impedance matrices for regular-shaped circuits and the short-circuiting operation on fictitious ports arranged at the peripheries of the metallic posts. First, a straight section of the PWW is treated as an example and the analytical method for the calculation of the S-parameters is described in detail. Then the attenuation and phase constants of the PWW are computed with the aid of the Thru-Reflect Line (TRL) calibration technique. Next, the analytical method is applied to the design of two types of right-angled corners. The analysis and the design results are verified using an em-simulator (HFSS).