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:
Apr. 15, 2008
Filed:
Apr. 18, 2005
Richard C. Ruby, Menlo Park, CA (US);
Graham M. Flower, San Jose, CA (US);
John D. Larson, Iii, Palo Alto, CA (US);
Mark A. Unkrich, Emerald Hills, CA (US);
Richard C. Ruby, Menlo Park, CA (US);
Graham M. Flower, San Jose, CA (US);
John D. Larson, III, Palo Alto, CA (US);
Mark A. Unkrich, Emerald Hills, CA (US);
Avago Technologies Wireless (Singapore) Pte. Ltd., Singapore, SG;
Abstract
An apparatus and method for detecting a target environmental variable (TEV). A first film-bulk acoustic resonator (FBAR) oscillator that includes a first FBAR with a first response to the target environmental variable generates a first frequency. A second film-bulk acoustic resonator (FBAR) oscillator that includes a second FBAR with a second response to the target environmental variable generates a second frequency. A circuit that is coupled to the first FBAR oscillator and the second FBAR oscillator determines the target environmental variable (e.g., changes in the TEV) based on the first frequency and the second frequency.