Comba Telecom Ltd. RX-7W22B 사용자 설명서
INSTALLATION GUIDE FOR RX-7W22-B
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Page 11
2 EQUIPMENT DESCRIPTION
2.1
FUNCTIONAL BLOCK DIAGRAM
Figure 2: PS BDA Functional Block Diagram
In the downlink path, the BTS signals are received by the donor antenna of the repeater. After the duplexer, the
signals are sent to the LNA module for pre-amplification and to the digital RF integrated module for digital
filtering and frequency conversion. Then the DL signals will be sent to the downlink PA to amplify power, and
filter via the duplexer. After amplification, the signals are transmitted at the MT port to the service antenna.
In the uplink path, 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 the PA for power amplification and
to the duplexer. After that, the uplink signals are sent to the donor antenna for transmission back to the BTS.
RX
DL PA
MT Port Duplexer
UL
`
TX
MT
PLL2
RX
TX
DT Port Duplexer
DT
PLL1
800MHz Integrated Digital
Module
DL PA
TX
PLL1
TX
700MHz Integrated Digital
Module
DL
UL PA