Group antenna with electronically phase-controlled beam

Details Group antenna with electronically phase-controlled beam Group antenna with electronically phase-controlled beam

1986-07-03

1988-03-29

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342368, 342153, G01S 304, G01S 1344

Patent

active

047347007

ABSTRACT:
An omni-directional scanning group antenna with electronically phase-control beam for precise target locating or target tracking comprising a plurality of line fed individual radiators (1) distributed within the volume of an imaginary three-dimensional body (2) such as a sphere which is divided into eight separate sub-volumes V1 through V8 forming octants wherein the signals SV1 through SV8 of the octants ae combined with a circuit (4) comprising eleven sum-difference elements so as to form one sum signal, one elevation difference signal and two azimuth difference signals. The invention is suitable for application in three-dimensional phase-array antennas for all-around scanning with precise target locating and target tracking.

REFERENCES:
patent: 3243804 (1966-03-01), Smith, Jr.
patent: 3344424 (1967-09-01), Hacker
patent: 3471857 (1969-10-01), Schwartz
patent: 3860924 (1975-01-01), Crain
patent: 3946395 (1976-03-01), Kirchhoff
patent: 4023172 (1977-05-01), Schmidt
German Article NTZ, 1968, Heft 10, Monopuls-Antenne fur Satellitenfunk, pp. 631-634.
French Antennes Pour Radars De Defense Aeriennce Revue Technique, Thomson-CSF-vol. 15, No. 2, Jun. 1983, pp. 481-482.

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