Apparatus and method for generating a substantially rectangular

Details Apparatus and method for generating a substantially rectangular Apparatus and method for generating a substantially rectangular

1993-08-09

1995-05-09

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular wave

327 74, 327104, H03K 1200

Patent

active

054143543

ABSTRACT:
A squaring amplifier circuit (300) generates a substantially rectangular output signal from an a.c. input signal. An amplifier stage (303) is biased at a low quiescent current by a current source network (305) and a coupling network (306). Since the amplifier stage (303) current is a non-linear function of its input voltage, application of a low-level a.c. input signal (313), through an input signal coupling network (302), results in a substantially rectangular output signal having frequency and duty cycle that are substantially identical to the frequency and duty cycle of the input signal.

REFERENCES:
patent: 3497723 (1970-02-01), Nelson
patent: 3639779 (1972-02-01), Garrigus
patent: 4794283 (1988-12-01), Allen et al.
patent: 4859873 (1989-08-01), O'Shaughnessy

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