Combined phase detector and low pass filter

Details Combined phase detector and low pass filter Combined phase detector and low pass filter

1982-03-15

1984-01-31

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307510, 307352, 307583, 328127, H03H 1100, H03K 5159, H03K 500

Patent

active

044292392

ABSTRACT:
A combined phase detector and low pass filter comprises charge storage means (10) which is responsive to an input signal (VI) and which is charged to a level dependent upon the magnitude and phase of the input signal in response to a first control signal (S1) which is a digital signal of given frequency. The potential stored in the charge storage means (10) is alternatively gated out by first and second gating circuits (12,14) into an integrating circuit (16) having an output VO. The gating circuits are connected such that the polarity of the connection of the stored potential to the integrating circuit is alternated. The gating circuits are responsive to second and third control signals (S2, S3), respectively, the second and third control signals having a frequency one-half that of the first control signal, and the phase difference between the second and third control signals being 180 degrees. The rate of increase in magnitude of the output signal (VO) represents the phase difference between the input signal and the first control signal.

REFERENCES:
patent: 4179665 (1979-12-01), Gregorian
patent: 4195266 (1980-03-01), Bingham
patent: 4331894 (1982-05-01), Gregorian et al.
patent: 4338571 (1982-07-01), Young
patent: 4365204 (1982-12-01), Haque
Martin et al., "Switched Capacitor Building Blocks for Adaptive Systems," IEEE Transactions on Circuits and Systems, vol. CAS-28, No. 6, Jun. 1981, pp. 576-584.

Affiliated with

Also associated with

Rating

Combined phase detector and low pass filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined phase detector and low pass filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined phase detector and low pass filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2347721