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.

Date of Patent:
Feb. 27, 2024

Filed:

Dec. 06, 2021
Applicant:

Rf360 Singapore Pte. Ltd., Singapore, SG;

Inventors:

Georgiy Sevskiy, Munich, DE;

Mykola Shevelov, Munich, DE;

Bohdan Bravichev, Munich, DE;

Mathieu Pijolat, Grenoble, FR;

Stefan Freisleben, Neubiberg, DE;

Patric Heide, Vaterstetten, DE;

Assignee:

RF360 Singapore Pte. Ltd., Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/00 (2006.01); H03H 9/05 (2006.01); H03H 9/125 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02007 (2013.01); H03H 9/0014 (2013.01); H03H 9/0504 (2013.01); H03H 9/125 (2013.01);
Abstract

Certain aspects of the present disclosure provide a filter circuit and techniques for filtering using the filter circuit. The filter circuit generally includes a first filter stage having a first acoustic wave resonator coupled in a series path between a first port of the filter circuit and a second port of the filter circuit, a first inductor-capacitor (LC) tank circuit, a first capacitor coupled between a first terminal of the first acoustic wave resonator and the first LC tank circuit, the first LC tank circuit being coupled between the first capacitor and a reference potential node, and a second capacitor coupled between a second terminal of the first acoustic wave resonator and the first LC tank circuit. In some aspects, the filter circuit includes one or more other filter stages coupled to the first filter stage.


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