Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1987-12-09
1989-05-02
Sikes, William L.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343844, 342373, H01Q 2100
Patent
active
048272701
ABSTRACT:
Antenna device for detecting a direction of an object lying in a low angle direction, which is constructed with a plurality of antenna elements, feeds, and so forth, and comprises a central feed for feeding RF signals to one or a plurality of central antenna elements, and a peripheral feed for feeding RF signals to a plurality of peripheral antenna elements, and that one of input terminals of the central feed and one of input terminals of the peripheral feed are connected together by a hybrid circuit.
REFERENCES:
patent: 3267472 (1966-08-01), Fink
patent: 3594811 (1971-07-01), Pierrot
patent: 3611401 (1971-10-01), Connolly
patent: 3803624 (1974-04-01), Kinsey
patent: 4010474 (1977-03-01), Provencher
"Low-Angle Radar Tracking in the Presence of Multipath", by W. D. White, Published Nov. 1974, vol. AES-10, No. 6, IEEE.
Haruyama Tetsuo
Katagi Takashi
Orime Nobutake
Udagawa Shigeo
Le Hoang-anh
Mitsubishi Denki & Kabushiki Kaisha
Sikes William L.
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