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Magnetic hybrid-mode horn antenna

  • US 5,126,750 A
  • Filed: 09/21/1990
  • Issued: 06/30/1992
  • Est. Priority Date: 09/21/1990
  • Status: Expired due to Fees
First Claim
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1. A magnetic hybrid-mode antenna system comprising:

  • a waveguide which receives and conducts transverse electromagnetic radio frequency signals;

    a corrugated horn antenna housing which has an inner wall, and which is fixed to said waveguide to receive said transverse electromagnetic radio frequency signals therefrom, said corrugated horn antenna housing radiating an electromagnetic waveform into space, said electromagnetic waveform having an E-plane pattern and an H-plane pattern; and

    a thin magnetic coating fixed on the inner wall of said corrugated horn antenna housing to adjust the E-plane and H-plane patterns of said electromagnetic waveform so that they are approximately equal by inducing an excitation of HE11 mode in the electromagnetic waveform to adjust said E-plane and H-plane patterns, wherein said thin magnetic coating has a thickness ranging between 30 and 60 mils, and wherein said thin magnetic coating has a complex relative permittivity of about 10.8-j0.4 and a complex relative permeability of about 0.8-j1.2.

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