Precision quadrature analog phase detector

Details Precision quadrature analog phase detector Precision quadrature analog phase detector

1980-03-31

1982-01-26

Moore, David K.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307512, H03C 300

Patent

active

043130895

ABSTRACT:
A precision quadrature analog phase detector provides a controllable amount of amplification of a signal that is then applied to a double balanced mixer for comparison with a reference signal. Outputs of the mixer are attenuated an amount equal in proportion to the amount of amplification to provide a constant overall gain. The double balanced mixer thus receives signals at a relatively high and substantially constant level regardless of the level of the input. Means are also provided for controlling offset.

REFERENCES:
patent: 3514720 (1967-03-01), Roucache et al.
patent: 3688196 (1972-08-01), Doelz
patent: 3771063 (1973-11-01), Barrett
patent: 3803499 (1974-04-01), Malik
patent: 3961172 (1976-06-01), Hutcheon
patent: 3961281 (1976-06-01), Woodling, Jr.

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