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. 15, 2020
Filed:
Nov. 09, 2017
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventor:
Motoki Ozasa, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 9/25 (2006.01); H03H 9/145 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/6489 (2013.01); H03H 9/02992 (2013.01); H03H 9/14544 (2013.01); H03H 9/25 (2013.01); H03H 9/6436 (2013.01); H03H 9/6483 (2013.01);
Abstract
A surface acoustic wave filter includes a longitudinally coupled filter connected between an input terminal and an output terminal on a main surface of a piezoelectric substrate and that includes longitudinally coupled resonators and a parallel arm resonator connected between a node between the input terminal and the longitudinally coupled filter and ground. A line connecting IDT electrodes at an input side of a portion of the longitudinally coupled resonators to the ground and a line connecting the parallel arm resonator to the ground are independently provided and are connected to the same ground terminal.