Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1978-02-16
1981-03-17
Lieberman, Eli
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
H01Q 326
Patent
active
042570506
ABSTRACT:
An antenna for transmitting or receiving, for limited fine scan or wide angle scan, or for producing multiple beams has a plurality antenna radiators or receivers (apertures) in a linear array, coupled to a smaller plurality of antenna networks so that many of the antenna apertures are coupled to two of the networks and the networks are all coupled to a common transmission line. For a spatial scanning system, each network is coupled to the common transmission line through a variable phase shifter so that the radiation patterns of the apertures combine to define a beacon of predetermined fine pointing direction that can be used to spatially sweep a sector by varying the phase shifters according to a predetermined schedule. Furthermore, by shifting the point of feed to the networks, the pointing direction is caused to switch in relatively large steps, from one sector to another sector.
REFERENCES:
patent: 3295134 (1966-12-01), Lowe
patent: 3474447 (1969-10-01), Melancon
patent: 3729742 (1973-04-01), Boyns
patent: 3852761 (1974-12-01), Bogner
patent: 3964066 (1976-06-01), Nemit
patent: 4041501 (1977-08-01), Frazita
patent: 4124852 (1978-11-01), Steudel
Dunn Robert T.
Lieberman Eli
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