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A periodic moment method solution for TM scattering from lossy dielectric bodies with application to wedge absorber

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3 Author(s)
C. -F. Yang ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; W. D. Burnside ; R. C. Rudduck

The periodic moment method (PMM) solution for the scattering from two-dimensional lossy dielectric bodies is developed. The purpose is to design a microwave wedge absorber for low reflectivity so that one can improve the performance of anechoic chamber measurements. With PMM, the reflection and transmission coefficients of periodically distributed bodies illuminated by a plane wave have been accurately calculated using a Cray Y-MP supercomputer. Through these studies, some wedge absorber configurations have been designed, fabricated, and then tested in the OSU/ESL compact range measurement facility. Two 8-in commercial wedges, a curved wedge, and a four-layer wedge, were studied. In all cases, good agreement between calculations and measurements was obtained

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:40 ,  Issue: 6 )