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:
Nov. 01, 2005
Filed:
Dec. 10, 2001
Paul E. Peterzell, San Diego, CA (US);
David Maldonado, Chula Vista, CA (US);
Kevin Gard, San Diego, CA (US);
Puay Hoe See, San Diego, CA (US);
Jeremy Dunworth, Cardiff, CA (US);
Gurkanwal Sahota, San Diego, CA (US);
Paul E. Peterzell, San Diego, CA (US);
David Maldonado, Chula Vista, CA (US);
Kevin Gard, San Diego, CA (US);
Puay Hoe See, San Diego, CA (US);
Jeremy Dunworth, Cardiff, CA (US);
Gurkanwal Sahota, San Diego, CA (US);
Qualcomm Inc., San Diego, CA (US);
Abstract
A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.