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.
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