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. 18, 2005
Filed:
Oct. 09, 2001
Lazaar J. Louis, Arlington Heights, IL (US);
Minh H. Duong, Lake Bluff, IL (US);
Charles P. Binzel, Bristol, WI (US);
Lazaar J. Louis, Arlington Heights, IL (US);
Minh H. Duong, Lake Bluff, IL (US);
Charles P. Binzel, Bristol, WI (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A mobile wireless communication device () having a direct conversion receiver () reduces spurious mixer response by predicting blockers on the received RF signal. The chopping frequency of the mixer is changed () dynamically in response to the prediction of blockers on the input signal to avoid the mixing the blocker with chopper spurs, thereby improving the response of the receiver. In some embodiments, the mixer is disabled momentarily () to verify that poor signal quality results from mixing chopper spurs with blockers. In hopping mode applications, the chopper frequency is changed only on channels having a low confidence factor ().