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:
Dec. 13, 2005
Filed:
Apr. 08, 2004
Applicants:
Robert Aigner, Unterhaching, DE;
Martin Handtmann, Munich, DE;
Stephan Marksteiner, Putzbrunn, DE;
Winfried Nessler, Munich, DE;
Inventors:
Robert Aigner, Unterhaching, DE;
Martin Handtmann, Munich, DE;
Stephan Marksteiner, Putzbrunn, DE;
Winfried Nessler, Munich, DE;
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H009/54 ; H03H009/56 ; H03H003/007 ;
U.S. Cl.
CPC ...
Abstract
A BAW resonator includes a first piezoelectric layer made of a material oriented toward a first direction, and a second piezoelectric layer made of a material oriented toward a second direction which is opposed to the first direction. The first piezoelectric layer and the second piezoelectric layer are acoustically coupled with each other.