Sergey Vynogradov

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This paper deals with the analysis of a spherical lens fed by an array of feed antennas. The spherical lens structure is accurately and efficiently analyzed by a spherical wave expansion method. The boundary element method is used for modeling of arbitrarily shaped feed antennas. Combining these two methods, a hybrid method is developed for accurate(More)
This paper studies the characteristics of a constant-K lens when considered as a possible substitute for a Luneburg lens in a reflector. The competitiveness of the substitute lens is investigated in its 2D analogue, by comparing the backscattering radar cross section for the range of D/λ ∈ (0, 200). The performance of cylindrical reflectors with either a(More)
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