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.:

US 7490390 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 17, 2009

Filed:

Apr. 27, 2007
Applicants:

Takashi Kawakubo, Yokohama, JP;

Kazuhide Abe, Kawasaki, JP;

Mayumi Morizuka, Kawasaki, JP;

Inventors:

Takashi Kawakubo, Yokohama, JP;

Kazuhide Abe, Kawasaki, JP;

Mayumi Morizuka, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 17/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A manufacturing method is provided for a voltage controlled oscillator comprising an thin film BAW resonator and a variable capacitor element. The thin film BAW resonator includes an anchor section formed on a Si substrate, a lower electrode supported on the anchor section and positioned to face the Si substrate, a first piezoelectric film formed on the lower electrode, and an upper electrode formed on the first piezoelectric film. The variable capacitor element includes a stationary electrode formed on a Si substrate, an anchor section formed on the Si substrate, a first electrode supported on the anchor section and positioned to face the Si substrate, a second piezoelectric film formed on the first electrode, and a second electrode formed on the second piezoelectric film.


Find Patent Forward Citations

Kawakubo, Takashi. (2009). Method of manufacturing a voltage controlled oscillator (U.S. Patent No. 7490390). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7490390

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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