Equipment Description; Functional Block Diagram - Comba Telecom RX-1839 User Manual

2 EQUIPMENT DESCRIPTION

2.1

FUNCTIONAL BLOCK DIAGRAM

DT
MODEM
Antenna
Port
MODEM
AC 100V-240V
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.
ENU STATUS : 1-0-0
INSTALLATION GUIDE FOR RX-1839
LNA DLin
Digital Integrated
DT Port
Duplexer
ULout
UL PA
PSU
Figure 2: RX-1839 Functional Block Diagram
Copyright - refer to title page
DLout
DL PA
Module
MT Port Duplexer
ULin
Li-ion
Battery
MT
VSWR
LNA
Testing
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