The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2014
Filed:
Jul. 13, 2012
David F. Sorrells, Jacksonville, FL (US);
Michael J. Bultman, Jacksonville, FL (US);
Robert W. Cook, Switzerland, FL (US);
Richard C. Looke, Jacksonville, FL (US);
Charley D. Moses, Jr., Jacksonville, FL (US);
Gregory S. Rawlins, Lake Mary, FL (US);
Michael W. Rawlins, Lake Mary, FL (US);
David F. Sorrells, Jacksonville, FL (US);
Michael J. Bultman, Jacksonville, FL (US);
Robert W. Cook, Switzerland, FL (US);
Richard C. Looke, Jacksonville, FL (US);
Charley D. Moses, Jr., Jacksonville, FL (US);
Gregory S. Rawlins, Lake Mary, FL (US);
Michael W. Rawlins, Lake Mary, FL (US);
ParkerVision, Inc., Jacksonville, FL (US);
Abstract
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, etc) of the carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the results of the recursive operations and uses the accumulated results to form a down-converted signal. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a hasehand information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.