EngineeringElectrical EngineeringAnalog ElectronicsCircuit TheoryPower ElectronicsHigh-frequency Power ConversionModulationPower AmplifiersPulse-width ModulationRadio-frequency Integrated CircuitsSwitch-mode Power SuppliesHigh-efficiency Power AmplifiersLinearityPower Amplifier DesignRadio Frequency Power AmplifiersRadio-frequency Power DevicesRf Power ManagementSwitch-mode Power Amplifiers
A technique is introduced to generate an amplitude- and phase-modulated RF signal with high linearity and efficiency. The input baseband signals, which are possibly in the Cartesian domain, are mapped to the phase and duty ratio of a PWM signal. The PWM signal is generated at the RF carrier frequency with relatively high efficiency. The PWM signal is easily filtered to give the desired RF signal.
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