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:
Feb. 09, 2021
Filed:
Mar. 29, 2018
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Shuji Nuimura, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Abstract
Calibration is performed such that phase references of element antennas match, without radiating radio waves from all element antennas at the same time. A plurality of element antennas are divided into element antenna groups, and operating element antenna sets, each including at least two element antenna groups including a measured element antenna group, are set to an operating state in order by a phase adjustment controller. The phase adjustment controller includes: an element-electric-field calculation circuit that uses a plurality of received power levels of radio waves radiated with different phases by changing the phases of element antennas and that calculates in-set phase differences, in an operating element antenna set, among element electric field vectors generated by the element antennas the phases of which are changed; and a phase-difference calculator that uses element electric field vectors of the element antennas for which the element electric field vectors are calculated by using a plurality of different operating element antenna sets and that calculates phase differences among the element electric field vectors of the element antennas included in the different operating element antenna sets.