Ripple-free phase detector using two sample-and-hold circuits

Details Ripple-free phase detector using two sample-and-hold circuits Ripple-free phase detector using two sample-and-hold circuits

1992-10-29

1995-04-25

Wolfe, Willis R.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 94, H03K 526

Patent

active

054101956

ABSTRACT:
A phase detector comprises a ramp voltage generator for receiving a reference pulse of a constant frequency and an input pulse and producing a ramp voltage proportional to the phase difference between these pulses. A first sample-and-hold circuit samples the ramp voltage in response to a sampling pulse and holds the sampled voltage. To eliminate ripple component, a second sample-and-hold circuit is provided, which is also responsive to the sampling pulse for sampling a voltage from a constant voltage source and holding the sampled voltage. The voltages sampled by the first and second sample-and-hold circuits are input to a subtractor where the voltage difference between the two input voltages is detected. Ripple components generated by the two sample-and-hold circuits are cancelled out by the subtractor.

REFERENCES:
patent: 4358736 (1982-11-01), DeBoer
patent: 4523150 (1985-06-01), Hogeboom
patent: 4641324 (1987-02-01), Karsh et al.
patent: 4698523 (1987-10-01), Gershon et al.
patent: 5006819 (1991-04-01), Buchan et al.
patent: 5034633 (1991-07-01), Stekelenburg
patent: 5157341 (1992-10-01), Fobbester et al.
patent: 5170075 (1992-12-01), De Wit
patent: 5179301 (1993-01-01), Hughes
patent: 5331230 (1994-07-01), Ichihara

Affiliated with

Also associated with

Rating

Ripple-free phase detector using two sample-and-hold circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ripple-free phase detector using two sample-and-hold circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ripple-free phase detector using two sample-and-hold circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1569837