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:
Sep. 25, 2018
Filed:
Dec. 30, 2016
Advanced Rf Technologies, Inc., Burbank, CA (US);
Jung-Hee Won, Anyang-si, KR;
Advanced RF Technologies, Inc., Burbank, CA (US);
Abstract
A multi-band multiple-input multiple-output (MIMO) transmitting apparatus and method of using an analog optical repeater that relays a downstream signal and an upstream signal between a base station and a terminal is provided. A head end of the analog optical repeater converts a frequency of a signal through a frequency converter to prevent the signal from overlapping with other signals having the same frequencies of a downstream multi-band, and uses a band already used by an optical module, and thus does not need to secure an additional band in the optical module. Accordingly, signals at the same frequency input into the HE can be transmitted through the optical cable and to the RU without overlapping. A flow of upstream signals received from the terminal are handled and transmitted similarly to the downstream signals, but in the opposite direction, whereby multi-band MIMO is implemented.