1
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr: Method and system for down-converting electromagnetic signals. Parkervision, Sterne Kessler Goldstein & Fox P L L C, May 9, 2000: US06061551 (153 worldwide citation)

Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased accor ...


2
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr: Method and system for down-converting electromagnetic signals by sampling and integrating over apertures. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, July 24, 2001: US06266518 (100 worldwide citation)

Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased accor ...