Sample-and-hold phase shifter control voltage distribution...

Details Sample-and-hold phase shifter control voltage distribution... Sample-and-hold phase shifter control voltage distribution...

2005-02-15

2005-02-15

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C333S164000, C342S372000, C342S374000, C343S778000

Reexamination Certificate

active

06856216

ABSTRACT:
A phase shift control voltage distribution scheme for a phased array utilizing voltage-proportional phase shift devices employs a digital-to-analog converter that supplies respectively different analog voltages to a sample-and-hold switch network coupled to analog voltage control inputs of the plurality of voltage-proportional phase shift devices. In order to impart a phase shift control voltage to one or more phase shift elements of the array, a control unit supplies a prescribed combination of a digital control code to the digital-to-analog converter and a switch control code to sample-and-hold switches of the switch network.

REFERENCES:
patent: 4652883 (1987-03-01), Andricos
patent: 5309166 (1994-05-01), Collier et al.
patent: 6559798 (2003-05-01), Marumoto et al.

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