Quarter-wave Fresnel zone plate lens and antenna

H.D. Hristov, M.H.A.J. Herben

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    A new variety of the Fresnel zone planar lens with enhanced focusing quality is proposed. Each full-wave zone is divided into four quarter-wave subzones, which are covered by dielectric rings having equal thickness but different permittivities. Based on this planar lens configuration, a transmissive-type Fresnel-zone antenna for DBS-reception with more than 50% aperture efficiency is developed and examined theoretically
    Original languageEnglish
    Pages (from-to)249-251
    Number of pages3
    JournalIEEE Microwave and Guided Wave Letters
    Publication statusPublished - 1995


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