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Equivalent Susceptance of a Circular Iris in a Parallel Plate Waveguide

Hiroaki MIYASHITA, Isamu CHIBA, Shuji URASAKI, Shoichiro FUKAO

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Summary :

An approximate formula is proposed for the equivalent susceptance of a circular iris in a parallel plate waveguide when the TEM mode cylindrical wave is incident from the center of the iris. Schwinger's variational method for a linear iris is generalized to the cylindrical case, and an approximate closed form formula is obtained which recovers the result of the linear iris when the radius of the circular iris is sufficiently larger than the wavelength. For verification of the formula, an exact integral equation is formulated and solved numerically by Galerkin's method. A comparison between them shows good agreement.

Publication
IEICE TRANSACTIONS on Communications Vol.E82-B No.11 pp.1844-1850
Publication Date
1999/11/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Communication Cable and Wave Guides

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