Phase shifting circuits

Details Phase shifting circuits Phase shifting circuits

1991-03-15

1992-10-20

LaRoche, Eugene R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 307264, 307350, 323212, 330107, C05F 500, H03L 700

Patent

active

051572885

ABSTRACT:
A phase shifting circuit includes: a pair of input terminals; a pair of output terminals; a variable gain amplifier and an active alternating current integrator, connected in series between the input terminals and the output terminals; and a control circuit for controlling the gain of the amplifier in dependence on the voltage between the input terminals and the voltage between the output terminals so as to maintain the amplitude of the voltage between the output terminals substantially equal to the amplitude of the voltage between the input terminals. The phase shifting circuit exhibits low variation of phase shift with input signal frequency.

REFERENCES:
patent: 4087737 (1978-05-01), De Gennaro
patent: 4506231 (1985-03-01), Green, Jr. et al.
patent: 4792744 (1988-12-01), Antoine
patent: 4935701 (1990-06-01), Kawai et al.
patent: 4958120 (1990-09-01), Gopinathan et al.

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