Patent ID: 9031121
Filing Date: 2015-05-12
Classification: H03D,H04B

Abstract:
1. An electronic circuit for recovering a desired signal from a carrier signal by demodulation, wherein the to be demodulated carrier signal along with the desired signal, is inputted by a signal input, said circuit comprising: a rectifier which passes only one polarity of the carrier signal; at least one filter, subsequent to said rectifier, for the suppression of at least one frequency range of the carrier signal; a comparator comprising two inputs; a voltage matching network, subsequent to said filter, which is embodied so that it matches the voltage of the desired signal, and is connected to one of the two inputs of said comparator; wherein an output of said comparator is switched, depending on the difference between said two inputs; and a feedback network connected in parallel with said comparator, wherein: said feedback network connects the other of said two inputs of said comparator with said output of said comparator, said feedback network comprises high-pass characteristic.