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:
Nov. 17, 1998
Filed:
Sep. 04, 1996
Applicant:
Inventor:
Bernd Stilling, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359173 ; 359145 ; 359152 ; 455524 ;
Abstract
For transmitting received signals from an antenna (A) to a base station (BS) of a radio system, optical signals, which are transmitted to the base station (BS) via a light guide (L), are generated in an antenna unit (AE) connected to the antenna (A). An optical carrier is generated in the base station (BS) and is fed to the antenna unit (AE). There, the optical carrier is modulated, using an electro-optical modulator (EO), in a way corresponding to the received signals coming from the antenna (A) and is transmitted to the base station (BS) via a light guide (L). The present invention dispenses with the need for dedicated lasers in the antenna units (AE).