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:
Dec. 10, 2019
Filed:
Sep. 20, 2018
Hitachi Kokusai Electric Inc., Minato-ku, JP;
Naoki Hongo, Tokyo, JP;
HITACHI KOKUSAI ELECTRIC INC., Tokyo, JP;
Abstract
A wireless communication system having a plurality of antennas is disclosed. A combination of transmission antennas and reception antennas is selected, the combination allowing Φ to be the closest to π radians, where Φ represents an absolute value of an angle obtained by subtracting φfrom φ, where φrepresents an angle formed by signal vectors transmitted from an i-th and a j-th transmission antennas of the first wireless device on an orthogonal plane on which a reception signal of a k-th reception antenna of the second wireless device is quadrature-detected or demodulated, and φrepresents an angle formed by the signal vectors transmitted from the i-th and the j-th transmission antennas of the first wireless device on an orthogonal plane on which a reception signal of an l-th reception antenna of the second wireless device is quadrature-detected or demodulated.