INTEGRATED ANALOG AND DIGITAL DISTRIBUTED ANTENNA SYSTEM (DAS) UTILIZING AN ALL FIBER OPTIC NETWORK
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United States of America Patent
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Issued Date -
Dec 3, 2015
app pub date -
May 29, 2015
filing date -
May 30, 2014
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Abstract
A system includes: hub configured to receive respective signal from one or more network devices, wherein hub is configured to convert combined signal containing respective signal from each network device into digital radio frequency (RF) signal; remote unit coupled to hub over first optical fiber communication medium to receive from hub optical signal representing digital RF signal, wherein remote unit is configured to recover digital RF signal from optical signal and to convert digital RF signal to analog RF signal; antenna unit coupled to remote unit over second optical fiber communication medium to receive from remote unit second optical signal representing at least portion of analog RF signal, wherein antenna unit is not co-located with remote unit; and antenna coupled to and co-located with antenna unit, wherein antenna is configured to radiate signal from frequency band in analog RF signal recovered by antenna unit from second optical signal.
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