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:
Oct. 21, 2008
Filed:
Mar. 01, 2005
Applicants:
Robert Aigner, Unterhaching, DE;
Stephan Marksteiner, Neubiberg, DE;
Inventors:
Robert Aigner, Unterhaching, DE;
Stephan Marksteiner, Neubiberg, DE;
Assignee:
Infineon Technologies AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/00 (2006.01); H03H 9/56 (2006.01); H03H 9/205 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bulk acoustic wave (BAW) filter () is fabricated from thin film bulk acoustic wave resonators and a method eliminates unwanted side passbands. This BAW filter comprises a substrate () a resonator section () and an acoustic mirror section (). Further it comprises a detuning component () positioned in the resonator section () to provide precise passband characteristics and an additional detuning component () in the acoustic mirror section () to suppress unwanted side-passband characteristics.