Transmit signal generator and method
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United States of America Patent
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Jan 19, 2010
Grant Date -
Dec 29, 2005
app pub date -
Jun 25, 2004
filing date -
Jun 25, 2004
priority date (Note) -
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Abstract
Disclosed is a method and apparatus for amplitude modulation of an RF transmit signal using pulse width modulation to control an amount of energy within each period. The apparatus includes a signal processing circuit with an input port for receiving of information indicative of a carrier frequency and modulation data. The signal processing circuit has a first output port and a second output port for providing of output signals having a phase relationship therebetween. A power amplifier is provided for receiving the output signals and for generating a pulse width modulated signal in dependence thereon.
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