41
Gregory S Rawlins, Michael W Rawlins, David F Sorrells: Method and apparatus for a parallel correlator and applications thereof. ParkerVision, Sterne Kessler Goldstein Fox PLLC, March 7, 2006: US07010559 (71 worldwide citation)

A fast correlator transform (FCT) algorithm and methods and systems for implementing same, correlate an encoded data word (X0-XM-1) with encoding coefficients (C0-CM-1), wherein each of (X0-XM-1) is represented by one or more bits and each said coefficient is represented by one or more bits, wherein ...


42
Gregory S Rawlins, Kevin Brown, Michael W Rawlins, David F Sorrells: Method and apparatus for DC offset removal in a radio frequency communication channel. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, December 13, 2005: US06975848 (71 worldwide citation)

A filter module for reducing a DC offset voltage in a radio frequency communication channel is described. A first capacitor is coupled between a first differential input node and a first differential output node. A second capacitor is coupled between a second differential input node and a second dif ...


43
Martin R Johnson, Jonathan S Jensen, Robert T Short, Jamison L Young, David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr: Phase shifting applications of universal frequency translation. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, July 25, 2006: US07082171 (70 worldwide citation)

A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT module implements a relative phase shif ...


44
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 frequency up-conversion with a variety of transmitter configurations. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, May 23, 2006: US07050508 (68 worldwide citation)

A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The up-conversion is accomp ...


45
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, September 19, 2006: US07110444 (67 worldwide citation)

Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation ...


46
David F Sorrells, Gregory S Rawlins, Michael W Rawlins: Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning. ParkerVision, Sterne Kessler Goldstein & Fox p l l c, September 9, 2008: US07423477 (67 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 ...


47
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, July 4, 2006: US07072390 (66 worldwide citation)

Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation ...


48
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 up-converting electromagnetic signals. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, May 15, 2007: US07218899 (64 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 ...


49
Francis J Smith, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins, Robert T Short, David F Sorrells: Carrier and clock recovery using universal frequency translation. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, April 11, 2006: US07027786 (64 worldwide citation)

Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. The coherent receiver includes a d ...


50
Robert W Cook, Michael J Bultman, Richard C Looke, Charley D Moses Jr, David F Sorrells: Integrated frequency translation and selectivity. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, July 11, 2006: US07076011 (63 worldwide citation)

Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering and the down-conversion operation ...