FM ANALOG DEMODULATOR COMPATIBLE WITH IBOC SIGNALS
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United States of America Patent
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app pub date -
Feb 13, 2017
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Jul 25, 2011
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Abstract
A method is disclosed which comprises receiving a radio signal; sampling and filtering the radio signal to isolate the FM portion; demodulating the FM portion of the received signal; applying a sliding window to the first, second, and third samples; and, adjusting the value of the second sample if the product of the second sample times the sum of the first and third samples is less than a threshold value. In various embodiments, an apparatus may be provided which comprises an input for receiving a radio signal and processing circuitry for performing various methods described herein.
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