Controlling output power of multiple-input single-output (miso) device

Abstract

Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

What is claimed is: 
     
         1 . (canceled) 
     
     
         2 . An apparatus comprising:
 a plurality of multiple-input single-output (MISO) devices;   a combining device configured to receive an output from each of the plurality of MISO devices; and   a control module configured to receive the output of the at least one MISO device and to control an output power of the at least one MISO device based on the received output.