Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1992-12-14
1993-12-28
Mintel, William
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
342437, 343844, 343853, H01Q 330, H01Q 1504, H01Q 2120, H01Q 2122
Patent
active
052743896
ABSTRACT:
An amplitude monopulse direction finding system is disclosed. The system is built around a circular array with a circular lens in which the antenna elements and array ports are larger than in conventional systems. The oversized antenna elements and array ports provide a wide range of operating frequencies for the direction finding system. Additionally, the direction finding system contains an omni-directional probe at the center of the lens to detect the presence of signals. In an alternative embodiment, each array port is split into two halves which can be combined in different ways to produce different beam patterns, allowing the beam pattern providing the best signal to noise ratio to be selected. Also, built-in-test circuitry is described.
REFERENCES:
patent: 3560985 (1971-02-01), Lyon
patent: 3568207 (1971-03-01), Boyns et al.
patent: 3680137 (1972-07-01), Wright
patent: 3754270 (1973-08-01), Thies, Jr.
patent: 3827055 (1974-07-01), Bogner et al.
patent: 4103304 (1978-07-01), Burnham et al.
patent: 4145696 (1979-03-01), Gueguen
patent: 4641144 (1987-02-01), Prickett
patent: 4931808 (1990-06-01), Lalezari et al.
Boyns et al., Step-Scanned Circular-Array Antenna, IEEE Trans. on Antennas and Prop., vol. AP-18, No. 5, Sep. 1970, pp. 590-595.
Archer, D. Lens-Fed Multiple Beam Arrays, Microwave Journal Oct. 1975 pp. 37-42.
Archer Donald H.
McInturff Kim
Mintzer Alfred I.
Thies Wilbur H.
Brown Peter Toby
Mintel William
Raytheon Company
Sharkansky Richard M.
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