Systems and methods for ripple communication decoding

摘要

The embodiments described herein provide devices and methods to facilitate ripple control communication. Specifically, the embodiments provide devices and methods for decoding ripple control data from ripple signals, such as ripple signals that have been superimposed over power signals used to transmit power. These embodiments provide devices and methods that use band-pass filter, signal multiplier, fast and slow low-pass filters, and accumulate a difference between outputs of these slow and fast low-pass filters. This accumulated difference is then used to decode the ripple control data.

主权项

1. A ripple control receiver, comprising:
a ripple signal extractor configured to receive a power signal having a superimposed ripple signal and extract the ripple signal from the power signal, wherein the ripple signal extractor comprises
a band-pass filter having an input and an output, the band-pass filter configured to receive the power signal having the superimposed ripple communication signal, anda signal-squaring element having an input and an output, the signal-squaring element input coupled to the band-pass filter output, the signal-squaring element output coupled to a fast low-pass filter and a slow low-pass filter; the fast low-pass filter configured to receive the extracted ripple signal and generate a first filtered ripple signal; the slow low-pass filter configured to receive the extracted ripple signal and generate a second filtered ripple signal; an accumulator configured to accumulate a difference between the first filtered ripple signal and the second filtered ripple signal and generate an accumulated value in response to the accumulated difference; and decoding logic configured to receive the accumulated value and decode ripple control data from the accumulated value.