Patent · US Active

Radio frequency network

US8428033B2 · kind B2 · utility

209Cited by

7References

19Claims

0Family size

Assignee

Alcatel Lucent · FR

Inventors

Heinz-Dieter Hettstedt · Altwarmbüchen, DE
Robert Zorad · Burgdorf, DE
Axel Schroeder · Dresden, DE
Gerd Klauke · Hannover, DE
Ekkehard Schomburg · Burgwedel, DE

Key dates

Filing date	Aug 27, 2009
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Jun 1, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04W88/085
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention relates to radio frequency (RF) distribution systems for mobile communications. In particular, the present invention relates to a radio frequency network facilitating radio communication where the usual free space propagation of electromagnetic waves is hampered, undesired or impossible, for example in tunnels, mines, and buildings and in large complexes like exhibition grounds, shopping malls, and airports. The radio frequency network comprises a distributed antenna system having radiating elements, a wired distribution system feeding the distributed antenna system, at least one antenna amplifier between one end of the wired distribution system and the distributed antenna system, at least one line amplifier at the other end of the wired distribution system, and automatic self-leveling units included in the antenna and line amplifiers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.