Abstract

This paper proposed a ASK demodulator with fully differential transconductance input stage and full-wave active rectifier for data rate improvement. Implemented in X-FAB 0.35 μm CMOS process, this design achieved demodulation performance of 4Mbps data rate with 13.56MHz carrier frequency and minimum input amplitude of 50mV. It can demodulate an input signal with 4% modulation index. Finally, 18pJ/bit energy efficiency has been achieved.

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