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Abstract

Exemplary embodiments are disclosed of demodulator circuits for amplitude shift keying (ASK) communication demodulation. In an exemplary embodiment, a demodulator circuit is configurable (e.g., modular and/or scalable, etc.) to include any number of levels (one or more N-Levels) of demodulation. Each level of the demodulator circuit includes a peak detector, a bandpass filter, and a lowpass filter and control capacitor(s). The bandpass filter is coupled with and between the peak detector and the lowpass filter and control capacitor(s). Each level of the demodulator circuit may be identical to each other and include the same or similar components (e.g., peak detector, bandpass filter, lowpass filter and control capacitor(s)). And each demodulator circuit level (Level-1, Level-2 . . . Level-N) may be coupled with a summing voltage amplifier. The summing voltage amplifier may be coupled with an adaptive DC-offset and a lowpass filter, which, in turn, is coupled with a microcontroller.

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First Claim