Comba Telecom Ltd. MBDA-200S Manual De Usuario
USER MANUAL FOR MBDA-200S
ENU STATUS : 1-0-0
Copyright - refer to title page
Page 11
2 EQUIPMENT DESCRIPTION
2.1 SYSTEM DIAGRAM
Donor
Ant
Modem
Power
Supply
Supply
Alarm
Indicator
DL PA
UL PA
UL LNA
DL LNA
Main Control Unit
DT
MT
Mobile
Mobile
Ant
Digital Frequency
Selective Module
DL PA
UL PA
UL LNA
DL LNA
Digital Frequency
Selective Module
DT
MT
Ant
Mobile
Figure 2: 2 Bands System Diagram for Example
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 via 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.
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 via 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.