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:
Aug. 28, 2012
Filed:
Apr. 02, 2009
Tzu-wang Pan, Saratoga, CA (US);
Yi Zeng, Fremont, CA (US);
I-hsiang Lin, Mountain View, CA (US);
Pushp K. Trikha, San Diego, CA (US);
Jeremy D. Dunworth, San Diego, CA (US);
Rahul Apte, San Francisco, CA (US);
Tzu-wang Pan, Saratoga, CA (US);
Yi Zeng, Fremont, CA (US);
I-Hsiang Lin, Mountain View, CA (US);
Pushp K. Trikha, San Diego, CA (US);
Jeremy D. Dunworth, San Diego, CA (US);
Rahul Apte, San Francisco, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An FM radio with a wide frequency range operates in a cell phone without interfering with the VCO of the RF transceiver. The FM transceiver generates a VCO signal whose frequency varies by less than ±7% from the midpoint of a narrow first range. A synthesizer signal is generated by dividing the VCO frequency by a first divisor such that the synthesizer frequency varies over a lower frequency second range. The VCO frequency is also divided by a second divisor such that the synthesizer frequency varies over a third range. The upper limit of the second range falls at the lower limit of the third range. The lower limit of the second range is 85.5 MHz and the upper limit of the third range is 108.0 MHz. By also using a third divisor, a synthesizer signal with a range of 76-108 MHz is generated from the narrow first frequency range.