User's Manual

User Manual
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4. Block diagram and work principle
The repeater is basically a bi-directional amplifier, the downlink signals are received by the repeater from cell
tower by the donor antenna, filtered by its internal duplexers and FC unit, amplified by low noise amplifier (LNA)
and downlink PA unit, and then sent via the server antenna to the area to improve mobile signals for mobile
phones.
The uplink signal of mobile devices from the coverage area is input via the server antenna, then filtered by
duplexers and FC unit, amplified by the uplink low noise amplifier (LNA) and the uplink PA unit and finally sent
via the donor antenna to the cell tower.