Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1985-08-23
1988-01-05
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
H01Q 322
Patent
active
047179180
ABSTRACT:
An antenna feed network for forming and steering a phased array antenna beam. The feed network includes a plurality of dual parallel microwave transmission paths for each array element. To form and steer the beam at the correct spatial angle each pair of paths is shorted at the appropriate location to provide a time delay for the wave traversing the path. Each signal of the plurality of signals drives a different element of the antenna array with the proper phase to form and steer a beam from the array. The feed network is linear and reciprocal and can therefore be used in a transmit or receive antenna array. A ferrite circulator can be used to generate the time delayed signals on the short circuited transmission line. However, this antenna is not reciprocal and must be adjusted for either a particular receive or transmit beam position.
REFERENCES:
patent: 2967301 (1961-01-01), Rearwin
patent: 3005168 (1961-10-01), Fye
patent: 3032763 (1962-05-01), Sletten
patent: 3137856 (1964-06-01), Tashjian
patent: 3697993 (1972-10-01), Jones et al.
patent: 3803620 (1974-04-01), Young
patent: 4229746 (1980-10-01), Charlton
patent: 4241352 (1980-12-01), Alspaugh et al.
Blum Theodore M.
DeAngelis, Jr. John L.
Harris Corporation
Sotomayor John B.
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