Frequency-doubling circuit

Details Frequency-doubling circuit Frequency-doubling circuit

1984-11-13

1987-01-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328160, 328 15, 307529, 307494, 307271, H03K 116

Patent

active

046396799

ABSTRACT:
A frequency doubling circuit for doubling the fundamental frequency of a signal wave, comprising a pair of full-wave rectifier circuits which produce output signals which are subtracted to derive the second harmonic of the fundamental frequency. The direct current component and unwanted harmonics produced by the rectifier circuits are suppressed by capacitive loading which establishes a phase-quadrature relationship between the fundamental signal waves applied to both rectifier circuits, and adaptively maintaining the amplitudes of the fundamental frequency signals produced thereby equal by means of a negative feedback gain control loop.

REFERENCES:
patent: 2440465 (1948-04-01), Ferguson
patent: 3710146 (1973-01-01), Ohsawa
patent: 3764927 (1973-10-01), Allinger et al.

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