Low-power, high-reliability switching rotary phase shifter devic

Details Low-power, high-reliability switching rotary phase shifter devic Low-power, high-reliability switching rotary phase shifter devic

1996-08-28

1998-03-31

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327374, H03K 1718

Patent

active

057342784

ABSTRACT:
A driver circuit for regulating the current flowing through the coils of a rotary field microwave phase shifter. The circuit includes logic circuitry functions which implements an algorithm to provide decision making capability to avoid failure-inducing conditions, reducing power consumption, and enhancing testability of the circuit. The circuit includes two switches that respectively drive either a positive or a negative voltage to the load, to begin steering the load current to the appropriate direction. The logic circuitry includes a current mode mapping function to determine whether a commanded current value requires positive, negative or no voltage applied to the load. The logic circuitry further includes a finite state machine to control the two switches, to ensure that both switches are never commanded to be conductive at the same time, and to permit toggling of only one of the switches to regulate the current to a target value in a feedback loop. The state machine also provides a test function which disables the current feedback loop of the circuit and generates deterministic patterns for tracing circuit activity.

REFERENCES:
patent: 4469961 (1984-09-01), Milberger et al.
patent: 4791312 (1988-12-01), Weick
patent: 5587676 (1996-12-01), Chowdhury

Affiliated with

Also associated with

Rating

Low-power, high-reliability switching rotary phase shifter devic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-power, high-reliability switching rotary phase shifter devic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-power, high-reliability switching rotary phase shifter devic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-54789