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:
Jan. 29, 2019
Filed:
Aug. 08, 2016
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventor:
Takashi Ogami, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/24 (2006.01); H01Q 1/48 (2006.01); H03H 7/01 (2006.01); H03H 9/54 (2006.01); H03H 9/64 (2006.01); H03H 7/075 (2006.01);
U.S. Cl.
CPC ...
H03H 7/0161 (2013.01); H01Q 1/243 (2013.01); H01Q 1/48 (2013.01); H03H 7/075 (2013.01); H03H 9/542 (2013.01); H03H 9/64 (2013.01); H03H 2210/025 (2013.01);
Abstract
A variable filter circuit () includes a parallel arm () connected between a port (P) and node (A), a series arm () including a resonator (Re_s) connected in series between a port (P) and node (A), and a series arm () including a resonator (Re_s) connected in series between a port (P) and node (A). The parallel arm () includes a first inductor (Lp). The series arms () include variable capacitors (Cp_s, Cp_s) connected in parallel to the resonators (Re_s, Re_s).