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Multilevel Power Supply for High Efficiency RF Amplifiers
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition
In radio systems linear power amplifiers (class A, B or AB) are usually used as a solution for the power amplifier stage. These amplifiers have high linearity, but suffer from low efficiency when the transmitted signal has low peak-to-average power ratio. The Kahn envelope elimination and restoration (EER) technique is used to enhance efficiency of RF transmitters, by combining highly efficient, nonlinear RF amplifier (class D or E) with a highly efficient envelope amplifier in order to obtaindoi:10.1109/apec.2009.4802821 fatcat:lngvuprykzctjk7ywmsbdsgms4