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:
Oct. 10, 2017
Filed:
Aug. 08, 2016
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventors:
Takashi Ogami, Kyoto, JP;
Hitoshi Tada, Kyoto, JP;
Masakazu Tani, Kyoto, JP;
Shouzo Sugiyama, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/10 (2006.01); H03H 7/01 (2006.01); H01G 7/06 (2006.01); H03H 7/075 (2006.01); H03H 9/54 (2006.01); H01G 17/00 (2006.01); H04B 1/00 (2006.01); H04B 1/12 (2006.01); H03H 9/60 (2006.01); H03H 9/64 (2006.01);
U.S. Cl.
CPC ...
H03H 7/0115 (2013.01); H01G 7/06 (2013.01); H01G 17/00 (2013.01); H03H 7/0153 (2013.01); H03H 7/075 (2013.01); H03H 9/542 (2013.01); H03H 9/605 (2013.01); H03H 9/6483 (2013.01); H04B 1/0064 (2013.01); H04B 1/126 (2013.01); H03H 2210/025 (2013.01);
Abstract
A variable filter circuit includes a serial arm connected between ports (P-P), a parallel arm having a resonator connected in series between ports (P-P), and another parallel arm having another resonator connected in series between ports (P-P). The serial arm includes a capacitor connected between the ports (P-P), and the parallel arms include variable capacitances connected in series to the resonators.