Antenna device capable of reducing a phase noise

Details Antenna device capable of reducing a phase noise Antenna device capable of reducing a phase noise

1992-07-21

1994-01-25

Mintel, William

Communications: radio wave antennas

Antennas

Microstrip

343853, 342372, H01Q 330, H01Q 2122

Patent

active

052819744

ABSTRACT:
In an antenna device comprising an antenna block which can electrically control a direction of a radio wave transmitted or received by the antenna device, a phase shift unit is connected to the antenna block to phase shift an external electric signal or an internal electric signal given to or from the antenna device. The phase shift unit has variable and discrete phase shifts switched from one to another in response to a control signal supplied from a controller and supplies a phase shifted external signal to the antenna block or a phase shifted internal signal to an external device. The antenna block comprises a plurality of antenna elements and a plurality of phase shifters which are connected to the antenna elements to send the phase shifted external signal to the respective antenna elements or to send the internal electric signal to the phase shift unit.

REFERENCES:
patent: 3276018 (1966-09-01), Butler
patent: 3811128 (1974-05-01), Munson
patent: 3854140 (1974-12-01), Ranghelli
patent: 4045800 (1977-08-01), Tang et al.
patent: 4343006 (1982-08-01), McVeigh et al.
patent: 4467328 (1984-08-01), Hacker
patent: 4792805 (1988-12-01), Miglia
patent: 4799065 (1989-01-01), Thompson
patent: 4849763 (1989-07-01), DuFort
patent: 4882587 (1989-11-01), Vodopia
I. J. Bahl et al, "Microstrip Antennas", Artech House 1979, pp. 270-287.

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