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:
Jul. 12, 2016
Filed:
Feb. 13, 2015
Tdk Corporation, Tokyo, JP;
Noriaki Ootsuka, Tokyo, JP;
Yasunori Sakisaka, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A directional coupler includes: a main line connecting an input port and an output port; a first subline section and a second subline section each of which is formed of a line configured to be electromagnetically coupled to the main line; and a matching circuit provided between the first subline section and the second subline section. The matching circuit includes a first path connecting the first subline section and the second subline section, and a second path connecting the first path and the ground. The first path includes a first inductor. The second path includes a first capacitor and a second inductor connected in series.