Ccd demodulator circuit

Details Ccd demodulator circuit Ccd demodulator circuit

H - Electricity

03

D

329/21

H03D 1/02 (2006.01) H01L 29/768 (2006.01) H01L 29/78 (2006.01) H03D 1/22 (2006.01) H03D 13/00 (2006.01)

Patent

CA 1168716

Abstract A semiconductor integrated circuit using charged coupled device (CCD) technology for performing demodulation of time-varying signals which have been phase or amplitude modulated. The CCD circuit performs a sampling of the time-varying signal at a suitable sampling frequency depending upon the frequency of the phase or amplitude modulation of the carrier. The CCD device converts the sample into an equivalent charge packet which is used to control the control electrode of a field effect transistor in an amplifier circuit. The magnitude of the sample is representative of the amplitude of the carrier so that the output of the field effect transistor represents a demodulated signal. The circuit is a braod spectrum device, operable with a signal frequency from the audio into the gigaHertz (GHz) frequency range. - 23 -

359186

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