Multiple-beam dual-offset reflector antenna with an array feed

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Multiple-beam dual-offset reflector antenna with an array feed

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© The Institution of Electrical Engineers
Published

A computer simulation is described for the production of multiple beams by a dual-offset reflector antenna with a feed consisting of a circular waveguide array. It is shown that acceptable efficiencies and low crosspolar levels can be achieved for two sample beams of a multibeam configuration by deriving the array excitation from the focal-region fields of the double-offset antenna.

Inspec keywords: digital simulation; waveguide antennas; communications computing; antenna arrays; antenna feeders; reflector antennas

Other keywords: dual offset reflector antenna; circular waveguide array; multiple beams; crosspolar levels; array feed; computer simulation

Subjects: Antenna accessories; Communications computing; Antenna theory; Antenna arrays

References

    1. 1)
      • S. Silver . (1949) , Microwave antenna theory and design.
    2. 2)
      • G.L. James . (1976) , Geometrical theory of diffraction for electromagnetic waves.
    3. 3)
      • P.J. Wood . Field correlation theorem with application to reflector aerial diffraction problems. Electron. Lett. , 326 - 327
    4. 4)
      • Bird, T.S.: `A spacecraft antenna with an array feed', Queen Mary College Research Report, 1978.
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