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Hard horns improve cluster feeds of satellite antennas

Hard horns improve cluster feeds of satellite antennas

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© The Institution of Electrical Engineers
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A major problem in many contoured-beam satellite antennas is that nearly half the power radiated by the cluster feed is lost as spillover into space. This spillover may be reduced considerably by using hard horns as cluster elements.

Inspec keywords: waveguide antennas; mobile antennas; antenna theory; antenna feeders; directive antennas; satellite relay systems

Other keywords: satellite antennas; contoured-beam; spillover prevention; cluster feeds; hard horns; microwave antennas

Subjects: Antenna theory; Satellite communication systems; Antenna accessories

References

    1. 1)
      • P.-S. Kildal . Definition of artificially soft and hard surfaces for electromagnetic waves. Electron. Lett. , 168 - 170
    2. 2)
      • M.S. Aly , S.F. Mahmoud . Propagation and radiation behaviour of longitudinally slotted horn with dielectric-filled slots. IEE Proc. H , 7 , 477 - 479
    3. 3)
      • P.-S. Kildal . Bandwidth of square hard horn. IEE Proc. H , 4
    4. 4)
      • E. Lier . Hard waveguide feeds with circular symmetry for aperture efficiency enhancement. Electron. Lett. , 166 - 167
    5. 5)
      • Lier, E., Kildal, P.S.: `A novel type of high-gain horn antennas', ICAP'87, 30 March–2 April 1987, York , p. 431–433, IEE Conf. Publ. 274.
    6. 6)
      • Balling, P.: `Spacecraft multi-beam and contoured-beam antennas', Agard Lecture Series, April 1987, Microwave Antennas for Avionics, No. 151, AGARD.
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