Electromagnetic Scattering by a Cylindrical Material Piercing through the Narrow Walls of a Rectangular Waveguide: Analytical Solution and Application to Material Characterization

Alfred KIK  Atsuhiro NISHIKATA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.1   pp.52-60
Publication Date: 2016/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.52
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
permittivity measurement,  permeability measurement,  rectangular waveguides,  cylinders,  inverse scattering,  electromagnetic analysis,  

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Summary: 
We propose a new swept-frequency measurement method for the electromagnetic characterization of materials. The material is a multilayer cylinder that pierces a rectangular waveguide through two holes in the narrow waveguide walls. The complex permittivity and permeability of the material are calculated from measured S-parameters as an inverse problem. To this aim, the paper develops a complete electromagnetic formulation of the problem, where the effects of material insertion holes are taken into consideration. The formulation is validated through the measurement of ferrite and water samples in the S-band.