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:
Apr. 16, 2013
Filed:
Aug. 15, 2012
Applicant:
Kazutaka Mukaiyama, Kyoto-fu, JP;
Inventor:
Kazutaka Mukaiyama, Kyoto-fu, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01P 5/12 (2006.01); H01P 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
The disclosure provides a directional coupler having favorable characteristics even when a parasite inductance is present on a coupling line. The directional coupler includes resistive elements between at least either a signal input port and a coupling port or between a signal output port and an isolation port. The resistive elements can reduce the output from the ISO port and improve directivity.