INSTALLATION GUIDE FOR mBDA OD SERIES
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Copyright - refer to title page
Page 12
2 EQUIPMENT DESCRIPTION
2.1
FUNCTIONAL BLOCK DIAGRAM
DL PA
UL PA
DT
MT
DT Port
Duplexer
MT Port Duplexer
Li-ion
Battery
MODEM
Antenna/
LAN Port
LNA
LNA
Digital Integrated
Module
DLin
DLout
ULin
ULout
MODEM
/LAN
PSU
AC 100V-240V
MCU
Figure 3: mBDA Functional Block Diagram
Note: Slave unit is not including Modem/LAN module and related connector.
In the downlink, the BTS signals are received by donor antenna of the repeater. After the duplexer, the
signals are sent to the LNA module for pre-amplification and digital RF integrated module for digital filtering
and frequency conversion. Then the DL signals will be sent to downlink PA to amplify power and filter via
duplexer. After amplification, the signals are transmitted at the MT port to the service antenna.
In the uplink, the mobile signals are received by the service antenna. After the MT port integrated duplexer,
the signals are sent to the LNA, integrated module for digital filtering, then to PA for power amplification and
to duplexer. After that, the uplink signals are sent to the donor antenna for transmission back to the BTS.
COM DT
COM MT
Combiner1
Combiner2
mBDA
Slave unit
Combiner
unit
DT
DT
MT
MT
Figure 4: Dual-band mBDA System Diagram
