1
David F Sorrells, Michael J Bultman, Charles D Clements, Robert W Cook, Joseph M Hamilla, Richard C Looke, Charley D Moses Jr, Gregory S Silver: Multi-mode, multi-band communication system. ParkVision, Sterne Kessler Goldstein & Fox P L L C, March 9, 2004: US06704549 (101 worldwide citation)

The present invention is directed toward the transmission subsystem of a multi-mode, multi-band communication system that can transmit and/or receive one or more information signals on one or more transmission frequencies using one or more modulation schemes. According to embodiments of the inventio ...


2
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: Systems, and methods of RF power transmission, modulation, and amplification, including embodiments for output stage protection. ParkVision, Sterne Kessler Goldstein & Fox PLLC, November 24, 2015: US09197163

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 contro ...