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. 18, 2009
Filed:
Jun. 28, 2007
Hasnain Lakdawala, Beaverton, OR (US);
Ofir Degani, Haifa, IL;
Ashoke Ravi, Hillsboro, OR (US);
Masoud Sajadieh, Beaverton, OR (US);
Soumyanath Krishnamurthy, Portland, OR (US);
Hasnain Lakdawala, Beaverton, OR (US);
Ofir Degani, Haifa, IL;
Ashoke Ravi, Hillsboro, OR (US);
Masoud Sajadieh, Beaverton, OR (US);
Soumyanath Krishnamurthy, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Film bulk acoustic resonators (FBARS) have resonant frequencies that vary with manufacturing variations, but tend to be matched when in proximity on an integrated circuit die. FBAR resonant frequency is determined using a fractional-N synthesizer and comparing phase/frequency of an output signal from the fractional-N synthesizer to a reference. The reference may be derived from a low frequency crystal oscillator, an external signal source, or a communications signal.