| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide methods and systems for vector combining power amplification. <P>SOLUTION: In one embodiment, a plurality of signals are individually amplified, and 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. <P>COPYRIGHT: (C)2013,JPO&INPIT |
