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:
Sep. 22, 2020
Filed:
Jun. 25, 2018
Ishiang Shih, Brossard, CA;
Cindy X. Qiu, Brossard, CA;
Chunong Qiu, Brossard, CA;
Andy Shih, Brossard, CA;
Julia Qiu, Brossaed, CA;
Yi-chi Shih, Los Angeles, CA (US);
Ishiang Shih, Brossard, CA;
Cindy X. Qiu, Brossard, CA;
Chunong Qiu, Brossard, CA;
Andy Shih, Brossard, CA;
Julia Qiu, Brossaed, CA;
Yi-Chi Shih, Los Angeles, CA (US);
Other;
Abstract
The present invention provides tunable film bulk acoustic resonators (FBARs) with the resonant frequency of the acoustic wave to be excited and to be transmitted tuned by digital to analog converters which convert an input digital signal to an output DC voltage and provide DC bias voltages to the FBARs through integrated thin film biasing resistors. The polarity and the value of the output DC voltage are controlled by the input digital signal to achieve selection and tuning of the resonant frequency of the FBARs. A plurality of the tunable FBARs are connected to form microwave filters with tunable bandpass frequencies and oscillators with selectable resonating frequencies by varying the input digital signals applied to the digital to analog converters.