Broadband omnidirectional microwave antenna for minimizing radia

Details Broadband omnidirectional microwave antenna for minimizing radia Broadband omnidirectional microwave antenna for minimizing radia

1994-04-19

1996-01-23

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Wave guide type

343781P, 343781CA, H01Q 1914

Patent

active

054868386

ABSTRACT:
An omnidirectional microwave antenna comprises a conical reflector and a conical feed horn. The conical reflector has a reflecting surface defined by a cone having an axis and a surface of revolution around the axis. The line of intersection between the surface of revolution and a plane passing through the axis and the surface of revolution is a segment of a parabolic curve. The reflector includes a flange extending outward from an outermost circumference of the surface of revolution of the cone. The conical feed horn feeds microwave energy to the conical reflector from a location along the axis of the cone. The feed horn has an aperture whose center is located approximately at the apex of the cone. The flange has absorptive material mounted thereto for absorbing microwave energy impinging thereon.

REFERENCES:
patent: 4263599 (1981-04-01), Bielli et al.
Takeichi et al, "The Omnidirectional Horn Reflector Antenna", G-AP International Symposium, 14-16 Sep. 1970, pp. 40-47.
Hines, "The Electrical Characteristics of the Conical Horn-Reflector Antenna", The Bell System Technical Journal, Jul. 1963, pp. 1187-1194.
Colman et al. "W Sidelobe Antennas for Millimeter Wave Communication Systems" Electronics Technology Div. of Naval Research Lab., Washington, D.C. pp. 240-243.

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