Communications: radio wave antennas – Antennas – Wave guide type
Patent
1990-04-06
1992-11-24
Hille, Rolf
Communications: radio wave antennas
Antennas
Wave guide type
343786, H01Q 13020, H01Q 19080
Patent
active
051666987
ABSTRACT:
A dielectric inset mountable within a conical horn antenna for focusing an impinging electromagnetic wave front as a planar wave front at an attached wave guide. In one construction a homogeneous inset having an ellipsoidal forward surface and conical aft surface is fitted into a double flared conical antenna including a cylindrical, hybrid mode matching section. In various alternative compound constructions, materials of differing dielectric constants and geometrical shapes are arranged to facilitate a size and weight reduction of the inset and focus the incident wave front relative to the wave guide. In other embodiments, still lower density materials, including suspended metallic particulates are used.
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Berberich et al. The Dielectric Properties of Rutile Form of TiO.sub.2 Journal of Applied Physics, vol. 11, Oct. 1940, pp. 681-692.
Radiation Behaviour of a Dielectric Loaded Double-Flare Multimode Conical Horn with a Homogeneous Dielectric Sphere in Front of its Aperture. Montech, 86, IEEE Conferences, 4 pages, 1986.
Anderson Donald E.
Anderson Ordean S.
Ashbaugh Fred E.
Nair Ramakrishna A.
Riebel Michael J.
Brown Peter Toby
Hille Rolf
Innova, Inc.
Tschida Douglas L.
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