Circuit and method for monitoring phase error modulation

Details Circuit and method for monitoring phase error modulation Circuit and method for monitoring phase error modulation

1991-08-21

1993-11-23

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328155, 307511, 307262, H03K 906, H03K 513

Patent

active

052648028

ABSTRACT:
A circuit is provided for detecting phase error between two signals by producing a phase error signal having a series of pulses wherein the widths of the pulses are representative of the phase error and producing a polarity signal representative of the polarity of the phase error. The phase error signal and polarity signal are used to produce a count representing the magnitude and polarity of the phase error for each of the pulses in the phase error signal. This count is converted to an analog signal which is compared to a pair of reference level signals to produce an output signal representative of the acceptability of the phase error corresponding to each of the pulses in the phase error signal.

REFERENCES:
patent: 4339731 (1982-07-01), Adams
patent: 4675597 (1987-06-01), Hernandez
patent: 4707142 (1987-11-01), Baker et al.
patent: 4849704 (1989-07-01), Thornton
patent: 4870664 (1989-09-01), Hayashi
patent: 4878231 (1989-10-01), Cok
patent: 4902920 (1990-02-01), Wolaver
patent: 4982109 (1991-01-01), Burwell

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