Device for the amplitude modulation of an electrical signal

Details Device for the amplitude modulation of an electrical signal Device for the amplitude modulation of an electrical signal

H - Electricity

03

C

345/13, 332/65

H03C 1/36 (2006.01) H03C 1/46 (2006.01)

Patent

CA 1059224

Abstract: A device for scanning patterns, e.g. optical patterns, in which on the surface of a piezo-electric material Bleustein-waves are produced, whilst in the material or in a semi-conductor layer deposited on the surface a drift field is produced. Said drift field pulsates between two levels, a low level at which the gain of the surface wave is independent of the "exposure" pattern and a high level at which the surface wave is lo- cally amplified in accordance with the "exposure" pattern.

234441

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