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:
Aug. 20, 2024
Filed:
Dec. 13, 2019
Applicant:
Rf360 Singapore Pte. Ltd., Republic Plaza, SG;
Inventors:
Simone Colasanti, Munich, DE;
Samir Tazarine, Munich, DE;
Robert Koch, Munich, DE;
Franz Kubat, Munich, DE;
Assignee:
RF360 Singapore Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/54 (2006.01); H03H 9/02 (2006.01); H03H 9/17 (2006.01); H03H 9/56 (2006.01);
U.S. Cl.
CPC ...
H03H 9/542 (2013.01); H03H 9/02102 (2013.01); H03H 9/02834 (2013.01); H03H 9/17 (2013.01); H03H 9/568 (2013.01);
Abstract
A filter circuit comprises a main operating unit (MU) arranged in the series signal line providing most of the filter function of the filter circuit. A micro acoustic last series resonator (RL) as a last element of the main operating unit in the series signal line is prone to excite a spurious mode that is damped with a final series capacitance (CE) circuited between the last element and the antenna terminal (AT).