Ask modulator and communication device using the same

Details Ask modulator and communication device using the same Ask modulator and communication device using the same

H - Electricity

03

K

H03K 7/02 (2006.01) H04L 27/04 (2006.01)

Patent

CA 2306993

An ASK modulator can be operated with only a positive-voltage power source. A source-voltage switching circuit that applies a positive voltage to the source of an FET when a data signal is at an L level in relation to the source of the FET is connected to the source of the FET which has a negative pinch-off voltage. Since the L level of the data signal can be set to 0 V, the ASK modulator can be configured only with the positive-voltage power source. This allows miniaturization and cost reduction to be implemented.

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