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The characteristics of some inhomogeneous lenses are investigated. The lenses covered are the Luneburg, the Eaton-Lippmann, and the Eaton. Radiation patterns and the bistatic scattering cross sections for the small-diameter lenses as well as the directivity and the distribution of the energy around the geometrical focus of the Luneburg lenses are numerically computed and examined in detail.
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Pawel Rozenfeld (1976) studied this question.
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