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On Designing Jaumann and Circuit Analog Absorbers (CA Absorbers) for Oblique Angle of Incidence

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3 Author(s)
Munk, B.A. ; Ohio State Univ., Columbus, OH ; Munk, P. ; Pryor, J.

Most investigations of Jaumann and circuit analog absorbers (CA absorbers) consider normal angle of incidence only. This paper expands our investigation to also include oblique angle of incidence as well as arbitrary polarization. Essentially two problems are encountered for oblique angle of incidence: An upward shift of the center frequency; and a mismatch that, in general, will vary with angle of incidence of the incident field. The new contribution given in this paper is that it considers ways to combat both of these dilemmas. Finally, comparison will be made with similar designs obtained by the genetic algorithm (GA) approach. It will be observed that the analytic approach, as used in this paper, in general leads to designs that are not only superior to the GA designs but also simpler, at least in the present case

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Antennas and Propagation, IEEE Transactions on  (Volume:55 ,  Issue: 1 )