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:
Mar. 20, 2012
Filed:
Sep. 28, 2010
Viet DO, Carlsbad, CA (US);
Simon Pang, San Diego, CA (US);
Viet Do, Carlsbad, CA (US);
Simon Pang, San Diego, CA (US);
Applied Micro Circuits Corporation, San Diego, CA (US);
Abstract
A system and method are provided for matching a signal (compClk) to a particular frequency band in a multiband communications device. The method accepts a compClk signal, a frequency source is selected from sources collectively covering a range of frequency bands, and a reference clock is supplied from the selected source. If the frequency of the compClk is greater than the reference clock frequency, a high frequency window sampler supplies a first frequency pattern detector output signal (fpdOut). Simultaneously, a low frequency window sampler compares the compClk signal with the reference clock. If the frequency of the compClk is less than the reference clock frequency, the low frequency window sampler supplies a second frequency pattern detector output signal (fpdOut). The selected frequency source is compared to fpdOutand fpdOutsignals, and a determination is made as to whether the selected frequency source coarsely matches the compClk frequency.