Phase-selective amplifier

Details Phase-selective amplifier Phase-selective amplifier

1979-06-22

1981-04-21

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

324118, H03F 338

Patent

active

042635586

ABSTRACT:
A phase-selective amplifier includes a first mixer with amplification switches to switch the amplification of the first mixer to n/2 conditions having approximately a sinusoidal relation. A second mixer receives the output of the first mixer, and an amplification switch is provided to switch the amplification of the mixer between a positive and a negative value. A voltage-controlled oscillator is provided with a phase control circuit, and logic elements are provided to connect the amplification switches to the phase control circuit.

REFERENCES:
patent: 3416087 (1968-12-01), Vargiu

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