Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1981-11-03
1985-02-19
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343375, 343782, H01Q 322, H01Q 324, H01Q 326
Patent
active
045008825
ABSTRACT:
An antenna system includes a reflector and a primary and a subsidiary array antenna which are disposed in front of an aperture of the reflector so as to be positioned back-to-back with each other. An electric power which is supplied to the primary array antenna is also partly supplied to the subsidiary array antenna after it has been controlled in both phase and amplitude in order that a radiant beam from the subsidiary array antenna compensates for that portion of a secondary radiant beam from the reflector which is blocked by the primary array antenna. For example, a transmission source is connected to the primary array antenna through a coupler and a distributor while the coupler is connected to the subsidiary array antenna through a phase and an amplitude regulator and a distributor. The source may also be connected via the distributor to the primary array antenna formed of a plurality of radiating elements which are respectively connected to corresponding radiating elements of the subsidiary array antenna through couplers and delay lines or feeder lines.
REFERENCES:
patent: 3071770 (1963-01-01), Wilkes
patent: 3245081 (1966-04-01), McFarland
patent: 3445850 (1969-05-01), Stegen
patent: 3604010 (1971-09-01), Schwartz
patent: 3775769 (1973-11-01), Heeren et al.
patent: 4166274 (1979-08-01), Reudink
patent: 4272770 (1981-06-01), Miller et al.
Katagi Takashi
Mano Seiji
Blum Theodore M.
Mitsubishi Denki & Kabushiki Kaisha
Steinberger Brian
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