Electronic beam steering of active arrays with phase-locked loop

Details Electronic beam steering of active arrays with phase-locked loop Electronic beam steering of active arrays with phase-locked loop

1994-08-23

1996-06-04

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

H01Q 322

Patent

active

055237649

ABSTRACT:
An electronic beam steering technique for active arrays uses a single balanced diode mixer phase-locked loop connected between adjacent oscillators. Each oscillator has its own antenna that radiates energy into free space so the phase difference between oscillators determines the direction of the main radiating beam. An offset voltage added to the phase-locked loop controls the phase difference and thus the beam direction, providing over 100.degree. of adjustable phase difference between adjacent oscillators.

REFERENCES:
patent: 3484784 (1969-12-01), McLeod
patent: 4313220 (1982-01-01), Lo et al.
patent: 4367542 (1983-01-01), Dubroff
patent: 4368469 (1983-01-01), Ott et al.
patent: 4408205 (1983-10-01), Hockham
patent: 4747160 (1988-05-01), Bossard
patent: 5274844 (1993-12-01), Harrison et al.

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