Apparatus and method for producing signals coded with amplitude shift keying
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United States of America Patent
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Feb 24, 2015
Grant Date -
Jun 3, 2010
app pub date -
Apr 24, 2008
filing date -
May 2, 2007
priority date (Note) -
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Abstract
An apparatus for coding a signal by means of amplitude shift keying comprises a class E amplifier including a switching transistor, to whose gate is supplied a voltage having an operating frequency for operating the class E amplifier. For achieving an amplitude shift keying in the output signal of the class E amplifier, a circuit for switching the operating frequency of the voltage supplied to the gate of the switching transistor, or the resonance frequency of the class E amplifier, between a first value and a second value is provided and in order to switch a deviation degree between the operating frequency and the resonance frequency between a first value and a second value.
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