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:
Jun. 30, 2020
Filed:
Sep. 01, 2016
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Ai-ichiro Sasaki, Atsugi, JP;
Akihiko Hirata, Atsugi, JP;
Souichi Oka, Atsugi, JP;
Fumiharu Morisawa, Atsugi, JP;
Osamu Kagami, Atsugi, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 7/00 (2006.01); H01Q 21/00 (2006.01); H01Q 21/24 (2006.01); H04B 5/00 (2006.01);
U.S. Cl.
CPC ...
H01Q 7/00 (2013.01); H01Q 21/0075 (2013.01); H01Q 21/24 (2013.01); H04B 5/0081 (2013.01);
Abstract
A loop antenna array capable of forming a clear boundary of a communication area is provided. The loop antenna array includes three loop antennas, in which a direction of a current flowing through the loop antenna arranged in the middle and a direction of a current flowing through each of the loop antennas arranged on both sides of the loop antenna arranged in the middle are opposite from each other, and the sum of magnetic moments of the three loop antennas is zero.