Analog-digital conversion device with surface elastic waves

Details Analog-digital conversion device with surface elastic waves Analog-digital conversion device with surface elastic waves

H - Electricity

03

M

354/92

H03M 1/00 (2006.01)

Patent

CA 1145050

ANALOG-DIGITAL CONVERSION DEVICE WITH SURFACE ELASTIC WAVES ABSTRACT OF THE DISCLOSURE The surface elastic wave device is an integral part of an analog-digital converter with intermediate frequency conversion. It is comprised of the acoustical part of a 4-pole surface elastic wave oscillator, a surface elastic wave reflector with track shifting working as a filter assembly and comprising one supply track and several return tracks having different angular frequencies, the reflector operating as a plurality of filters, and output transducers overlapping the return tracks and connected to detectors producing the digital information. Many types of reflectors and output transducer assemblies are described. The invention is useful with analog-digital converters having medium access times.

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