Thin wideband absorber with optimal thickness
Author
Summary, in English
The known methods for designing nonmagnetic absorbers usually aim for either the reduction of total thickness or increase of absorption bandwidth by sacrificing the other parameter. The conventional circuit analog absorbers aim for large bandwidths whereas the newly proposed meta-material or optimized geometry designs try to reduce the thickness of the absorber. By the aid of the capacitive circuit absorber approach, an optimal method for designing thin absorbers with practical bandwidths is proposed. An absorber is designed for the whole radar X-band with total thickness about lambda/10. It is shown that the absorber thickness is satisfactorily close to the theoretical limit. The effect of mutual coupling on the performance of thin absorbers are investigated and some techniques for reducing the mutual couplings are suggested.
Publishing year
2010
Language
English
Publication/Series
Technical Report LUTEDX/(TEAT-7192)/1-9/(2010)
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Document type
Report
Publisher
[Publisher information missing]
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Report number
TEAT-7192
Research group
- Electromagnetic theory