Electromagnetic scattering from microwave absorbers: Laboratory verification of the coupled wave theory

Author

Gasiewski, A.J. ; Jackson, D.M.

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1992

fDate

18-25 June 1992

Firstpage

412

Abstract

Laboratory W-band measurements of the bistatic scattering function of some common microwave absorbing structures have been made. The structures investigated include periodic wedge-type and pyramid-type iron-epoxy calibration loads and flat carbon-foam ´Echosorb´ samples. Measurements were made using an HP 8510 network analyzer interfaced with a focused-lens scattering range. The test set provided a dynamic range of approximately 55 dB. Swept frequency measurements over the 75-100-GHz band have revealed specular and Bragg reflection characteristics in the measured data.<>

Keywords

electromagnetic wave scattering; shielding; 75 to 100 GHz; Bragg reflection characteristics; EHF; EM scattering; bistatic scattering function; coupled wave theory; flat carbon-foam Echosorb sheet; laboratory W-band measurements; microwave absorbers; periodic pyramid Fe-epoxy absorber; periodic wedge Fe-epoxy absorber; specular reflection characteristics; swept frequency measurements; Calibration; Dynamic range; Electromagnetic measurements; Electromagnetic scattering; Frequency measurement; Laboratories; Microwave measurements; Periodic structures; Reflection; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221911

Filename

221911