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:
Jul. 31, 2007
Filed:
Jul. 14, 2004
Charles R. Ruelke, Margate, FL (US);
Nicholas G. Cafaro, Coconut Creek, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Charles R. Ruelke, Margate, FL (US);
Nicholas G. Cafaro, Coconut Creek, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A dynamically matched mixer system () for use in a direct conversion radio frequency (RF) receiver includes a frequency generator () that includes plurality of dividers () for providing differential local oscillator reference sources (Fand F) and mitigation frequency reference sources (Fand F) from reference oscillator (). A mixer () mixes the differential local oscillator reference sources (Fand F) and the mitigation frequency reference sources (Fand F) while dynamic matching units () are used for receiving the mitigation frequency reference sources and matching switching parameters of differential input signals (Iand I) and differential baseband output signals (Iand I). The frequencies of the mitigation frequency reference sources (Fand F) are selected so as to establish a non-integer relationship to the reference oscillator () for mitigating the occurrence of interference with Fand F.