Radio frequency network
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United States of America Patent
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Apr 23, 2013
Grant Date -
Mar 4, 2010
app pub date -
Aug 27, 2009
filing date -
Aug 28, 2008
priority date (Note) -
In Force
status (Latency Note)
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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.
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