Phase comparator device with wide dynamic range

Details Phase comparator device with wide dynamic range Phase comparator device with wide dynamic range

1992-03-19

1994-04-26

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328151, 328155, 307262, 307511, 307523, 307353, H03K 906, H03K 500, H03K 5159, H03L 700

Patent

active

053070208

ABSTRACT:
The phase comparator device with wide dynamic range comprises a phase comparator with reduced dynamic range to carry out the measurement, on a limited phase range, of the phase difference existing between an incident signal and an external reference signal modulated by a controlled phase signal generator. The device comprises, firstly, a phase accumulation circuit coupled to the output of the phase comparator for the successive accumulation, at determined instants, of the phase differences measured by the phase comparator and actuate the controlled phase signal generator so that its phase permanently follows the value of the phase differences cumulated in the accumulation circuit and, secondly, an adder circuit coupled to the output of the phase accumulation circuit and to the output of the comparator to add the phase difference measured by the phase comparator to the contents of the accumulation circuit. Application: phased carrier tracking loop for satellite navigation receiver.

REFERENCES:
patent: 4458214 (1984-07-01), Lakomy
patent: 4543542 (1985-09-01), Owen
patent: 4675885 (1987-06-01), Gagliardi et al.
patent: 4709237 (1987-11-01), Poullain et al.
patent: 4728884 (1988-03-01), Gumm
patent: 4890248 (1989-12-01), Reinhardt
International Journal of Electronics, vol. 49, No. 4, Oct. 1980, London GB, pp. 333-337, M. Emura, et al., "Wide Dynamic Range Phase-Comparator Using an Analogue Shift Register".
Patent Abstracts of Japan, vol. 11 No. 374 (E-562)(2821), Dec. 5, 1987, & JP-A-62 142429, Jun. 25, 1987, M. Fujita, "Phase Locked Loop".

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