31
David F Sorrells, Michael J Bultman, Charles D Clements, Robert W Cook, Joseph M Hamilla, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins, Gregory S Silver: Spread spectrum applications of universal frequency translation. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, September 19, 2006: US07110435 (82 worldwide citation)

Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late rec ...


32
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: Automated meter reader applications of universal frequency translation. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, September 28, 2004: US06798351 (81 worldwide citation)

Frequency translation and applications of same are described herein, including RF modem and wireless local area network (WLAN) applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and f ...


33
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: Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service. Parker Vision, Sterne Kessler Goldstein & Fox P L L C, February 28, 2006: US07006805 (78 worldwide citation)

A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a single band/channel mode, and a multi ...


34
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Apparatus, system, and method for down-converting and up-converting electromagnetic signals. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, March 7, 2006: US07010286 (78 worldwide citation)

Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive operations can be performed at a su ...


35
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, September 2, 2008: US07421036 (78 worldwide citation)

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 ...


36
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: Systems and methods of RF power transmission, modulation, and amplification, including embodiments for extending RF transmission bandwidth. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, July 6, 2010: US07750733 (76 worldwide citation)

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 ...


37
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Differential frequency down-conversion using techniques of universal frequency translation technology. Parkervision, Sterne Kessler Goldstein & Fox PLLC, November 8, 2005: US06963734 (74 worldwide citation)

Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described h ...


38
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Method and system for down-converting an electromagnetic signal, and transforms for same. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, June 20, 2006: US07065162 (73 worldwide citation)

Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving an EM signal and recursively operating on approximate half cycles (½, 1½, 2½, ...


39
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, November 17, 2009: US07620129 (72 worldwide citation)

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 ...


40
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: Systems and methods for vector power amplification. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, February 27, 2007: US07184723 (72 worldwide citation)

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 ...