Modulator, mixer and method for amplitude shift keying modulation
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United States of America Patent
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Aug 5, 2014
Grant Date -
Jun 27, 2013
app pub date -
Feb 20, 2012
filing date -
Dec 27, 2011
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Abstract
An ASK modulator includes a baseband unit which obtains a sequence comprising at least one amplitude value and adds an additional value to each of the at least one amplitude value to generate a modified sequence; a digital-to-analog converter coupled to the baseband unit, the digital-to-analog converter converts the modified sequence to generate a first signal, the additional value is determined based on a half scale of the digital-analog converter; and a mixer which receives the first signal and a second signal and generate a modulated signal by mixing the first signal with the second signal.
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