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. 14, 2023
Filed:
Feb. 06, 2019
Nec Corporation, Tokyo, JP;
Takuji Mochizuki, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
One of a plurality of radio communication apparatuses () becomes a master apparatus (-M), and a rest of them become slave apparatuses (-S). The master apparatus and each of the slave apparatus includes a plurality of transceivers () each composed of a transmitter and a receiver and first ports (and). The master apparatus further includes a calibration transceiver (). The first port of the master apparatus is connected to the first port of the slave apparatus via an RF cable. When transmission calibration is performed, each transmitter of the slave apparatus transmits a transmission calibration signal to the calibration transceiver of the master apparatus via the RF cable. When reception calibration is performed, the calibration transceiver of the master apparatus transmits a reception calibration signal to each receiver of the slave apparatus via the RF cable.