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:
Feb. 02, 2021
Filed:
Sep. 07, 2018
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventor:
Ikuo Tamaru, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 5/18 (2006.01); H01P 5/12 (2006.01); H03H 7/48 (2006.01); H01G 4/40 (2006.01); H01P 3/08 (2006.01); H03H 1/00 (2006.01); H03H 7/01 (2006.01); H01G 4/30 (2006.01); H01G 4/38 (2006.01);
U.S. Cl.
CPC ...
H01P 5/185 (2013.01); H01G 4/40 (2013.01); H01P 3/08 (2013.01); H01P 5/184 (2013.01); H03H 1/00 (2013.01); H03H 7/0115 (2013.01); H03H 7/48 (2013.01); H01G 4/30 (2013.01); H01G 4/385 (2013.01); H03H 2001/0085 (2013.01);
Abstract
A directional coupler that achieves flattening of a coupling characteristic and size reduction or miniaturization is used in a predetermined frequency band and includes a first terminal, a second terminal, a third terminal, a fourth terminal, a main line, and a sub line. The main line is connected between the first terminal and the second terminal. The sub line is connected between the third terminal and the fourth terminal. In the sub line, a low-pass filter is provided.