Microwave antenna, based on reflection holography, designed and tested. Modified to produce arbitrary beam patterns by controlling relief pattern. Antenna planar or contoured to supporting structure. Low off-axis radar cross section at frequencies removed from operational frequency. Interference pattern produced by spherical wave intersecting plane wave consists of concentric circles similar to Newton's rings. Pattern identical to Fresnel zone plate, which has lens properties. Plane wave incident on hologram, or zone plate, focused to point.


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    Title :

    Reflection-Zone-Plate Antenna


    Contributors:

    Published in:

    Publication date :

    1989-02-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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