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:
Jan. 23, 2007
Filed:
Sep. 16, 2004
Thomas A. Bachman, Ii, Darlington, MD (US);
Robert W. Kooker, Freeland, MD (US);
Paul E. White, York, PA (US);
Paul Everline, Wildwood, IL (US);
Robert Snyder, New Freedom, PA (US);
David M. January, Parkton, MD (US);
Leonard Sarver, York, PA (US);
Philip Shenenberger, Manheim, PA (US);
Thomas A. Bachman, II, Darlington, MD (US);
Robert W. Kooker, Freeland, MD (US);
Paul E. White, York, PA (US);
Paul Everline, Wildwood, IL (US);
Robert Snyder, New Freedom, PA (US);
David M. January, Parkton, MD (US);
Leonard Sarver, York, PA (US);
Philip Shenenberger, Manheim, PA (US);
Andrew Corporation, Orland Park, IL (US);
Abstract
A feed forward power amplifier system and method identify active channels across a frequency band to suppress unwanted intermodulation distortion (IMD) products in a communications signal such as a single- or multi-carrier communications signal. A scanning receiver identifies at least one active channel in a frequency band, and identifies at least one portion of the frequency band likely to include IMD products based upon the identified active channel(s). Based upon the identified portion of the frequency band, IMD products are suppressed from the communications signal, e.g., by controlling the magnitude and/or phase of a suppression signal mixed with the communications signal.