Patent Number: 7,355,470

Title: Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning

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.

Inventors: Sorrells; David F. (Middleburg, FL), Rawlins; Gregory S. (Heathrow, FL), Rawlins; Michael W. (Lake Mary, FL)

Assignee: ParkerVision, Inc.

International Classification: G01R 19/00 (20060101)

Expiration Date: 2020-04-08 0:00:00