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:
Jun. 28, 2022
Filed:
Aug. 31, 2020
Applicant:
Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;
Inventors:
Johanna Meltaus, Espoo, FI;
Tuomas Pensala, Espoo, FI;
Assignee:
Teknologian tutkimuskeskus VTT Oy, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/54 (2006.01); H03H 9/56 (2006.01);
U.S. Cl.
CPC ...
H03H 9/547 (2013.01); H03H 9/564 (2013.01); H03H 9/568 (2013.01);
Abstract
The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.