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. 22, 2019
Filed:
Aug. 17, 2017
Applicant:
Tdk Corporation, Tokyo, JP;
Inventor:
Takeshi Oohashi, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H01P 5/18 (2006.01); H01Q 1/48 (2006.01); H01Q 1/52 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
H03G 3/3042 (2013.01); H01P 5/18 (2013.01); H01Q 1/48 (2013.01); H01Q 1/528 (2013.01); H03F 3/19 (2013.01); H03F 3/245 (2013.01); H03H 7/0115 (2013.01);
Abstract
Disclosed herein is a directional coupler that includes a main line configured to transmit a high-frequency signal, a sub line electromagnetically coupled to the main line, and a ground pattern positioned at least partially between the main line and the sub line in a plan view. The sub line includes a low pass filter having an inductance pattern and a capacitor. The ground pattern has an opening that overlaps at least the inductance pattern in a plan view.