Active multiple beam antennas

Details Active multiple beam antennas Active multiple beam antennas

1999-04-01

2000-11-14

Wong, Don

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343909, H01Q 1906

Patent

active

061476560

ABSTRACT:
Improved active multiple beam antennas that comprise an amplifier array or grid amplifier having substantially identical amplifiers. A feed array having a plurality of antenna elements provides RF energy. A microwave lens is disposed adjacent to the feed array that weakly focuses the RF energy from the feed array. The amplifier array or grid amplifier is disposed opposite the microwave lens from the feed array. The feed array illuminates the amplifier array or grid amplifier via the microwave lens. The weakly focused RF signals are amplified without changing their respective directions of propagation, which forms powerful multiple beams in the far field.

REFERENCES:
patent: 3979750 (1976-09-01), Smith
patent: 4229740 (1980-10-01), Krilanovich
patent: 5515009 (1996-05-01), Wong et al.
patent: 5736963 (1998-04-01), Roederer
patent: 6020848 (2000-02-01), Wallace et al.

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