Patent ID: 8233858
Filing Date: 2012-07-31
Classification: H03F,H03G,H04B

Abstract:
1. An apparatus for power amplification, comprising: one or more vector modulators configured to generate a plurality of substantially constant envelope signals; a multiple-input single-output (MISO) amplifier configured to amplify and combine said substantially constant envelope signals to generate an output signal, wherein said MISO amplifier comprises at least a driver stage and a power amplifier stage; and a control module configured to control a power level of said output signal based on an adjustment of one or more characteristics of said substantially constant envelope signals, wherein said control module comprises a transfer function module, the transfer function module having an output coupled to a corresponding input of the one or more vector modulators, said transfer function module output being configured to cause said one or more vector modulators to adjust an amplitude of said substantially constant envelope signals prior to amplification by the MISO amplifier.