Demodulator

Details Demodulator Demodulator

H - Electricity

03

D

329/16, 329/8

H03D 3/00 (2006.01) H03D 3/04 (2006.01) H03K 9/04 (2006.01) H03K 9/06 (2006.01) H03K 9/08 (2006.01)

Patent

CA 1207037

17 ABSTRACT OF THE DISCLOSURE A demodulator for demodulating alternating signals modulated by pulse modulation, or by frequency modulation. The demodulator requires only a single constant current source, a single ramp voltage producing capacitor, and a sample-and-hold function. The intelligence contained in the modulated carrier is transformed into a first pulse train, and a second pulse train is produced in response to the first pulse train. The first pulse train samples and holds the ramp voltage, and the second pulse train immediately resets the ramp voltage circuit following each sample. The held voltage is a replica of the modulating signal, produced without the use of filters for removing the carrier.

431493

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