Communications: radio wave antennas – Antennas – Wave guide type
Patent
1990-09-21
1992-06-30
Hille, Rolf
Communications: radio wave antennas
Antennas
Wave guide type
343787, H01Q 1300
Patent
active
051267500
ABSTRACT:
A magnetic corrugated horn antenna system is disclosed. This system includes a magnetic hybrid-mode horn antenna composed of a circular waveguide and a corrugated horn antenna which has a thin magnetic coating on its inner wall. The corrugation of the conical horn helps it to produce equal E-plane and H-plane patterns with low sidelobes. The magnetic coating can enhance or duplicate the beneficial effects of the corrugation, while avoiding the high gain loss and poor patterns reported in prior art systems that relay only on corrugated horns.
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Lee et al., "A Simple Circular Polarized Antenna: Circular Waveguide Horn Coated with Lossy Magnetic Material", IEEE Transactions on Antennas and Propagation, vol. 36, No. 2, Feb. 1988, pp. 297-300.
Wang, Johnson, J. H. et al, "Design and Performance of the Magnetic Hybrid-Mode Horn", IEEE Transactions on Antennas and Propagation, vol. 37, No. 11, Nov. 1989, pp. 1407-1414.
Wang, J. J. H. et al, "Magnetically coated horn for low sidelobes and low cross-polarisation", IEEE Proceedings, vol. 136, Pt. H. No. 2, Apr. 1989, pp. 132-138.
Tripp Victor K.
Wang Johnson J. H.
Auton William G.
Hille Rolf
Le Hoang-anh
Singer Donald J.
The United States of America as represented by the Secretary of
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