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:
Jan. 09, 2018
Filed:
Aug. 15, 2014
Applicant:
Keio University, Tokyo, JP;
Inventors:
Tadahiro Kuroda, Yokohama, JP;
Hiroki Ishikuro, Yokohama, JP;
Assignee:
KEIO UNIVERSITY, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 25/02 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02B 6/2932 (2013.01); H04L 25/0266 (2013.01); H04L 25/0272 (2013.01); H04L 25/0278 (2013.01);
Abstract
The invention relates to a directional coupling-type multi-drop bus of which the impedance is matched with the bus at the time of coupling so that the speed is increased. A directional coupler is formed when a second module provided with a second coupler end is mounted on a first module provided with a first coupler end, and as a result, the coupling impedance where the proximity effects in the coupling state of the directional coupler are reflected is matched with the impedance of the bus.