User's Manual

PN 8100-40 Help Hot Line (U.S. only): 1-800-530-9960 5-3
620004-0 Rev. B
LGCell Remote Access Unit Connectors
SMA Connector
There is one female SMA connector on a single band RAU and on the 900/1800 dual
band RAU; and two female SMA connectors on the 1800/1800 dual band RAU. The
connector is a duplexed RF input/output port that connects to standard passive antennas.
Figure 5-4 SMA Connector on the Single Band RAU
The 900/1800 dual band RAU has a single female SMA connector. The RAU uses a
diplexer to combine the 900 MHz and 1800 MHz signals from the 900/1800 dual
band Expansion Hub for output to a single passive antenna. Conversely, the uplink
signals are separated into 900 MHz and 1800 MHz signals and sent to the 900/1800
dual band Expansion Hub.
The 1800/1800 dual band RAU has two female SMA connectors. The RAU combines
the signals from each of the 1800 MHz bands on the 1800/1800 dual band Expansion
Hub and passes the signals to both SMA connectors. On the uplink, all signals are
sent to both 1800 MHz bands on the 1800/1800 dual band Expansion Hub. When
attaching one passive antenna, terminate the unused connector with an SMA-type
50 ohm terminator (LGC Wireless part number 4100).
Diagrams of the dual band RAUs are shown in the following figure.
Figure 5-5 Block Diagram of the Dual Band RAUs
900 GSM/1800 DCS Dual Band RAU
900 GSM
1800 DCS
Diplexer
STP
STP
RF Out/In
to/from Antenna
GSM 900 +
1800 DCS
1800 DCS/1800 DCS Dual Band RAU
1800 DCS(i)
STP
STP
RF Out/In
to/from Antenna
1800 DCS(i) +
1800 DCS(ii)
Combiner
1800 DCS(i) +
1800 DCS(ii)
1800 DCS(ii)
Hybrid