User Manual

Repeater User Manual
SmartCell Repeater
13
<Figure 3> Repeater Port Design (Rear View)
NO. PORT NO. PORT
1 Main FAN 4 DC 12V output (for EMB)
2 PSU FAN 5 Power Cable
3 Main Switch
2.2.2. Downlink/ Uplink Path
The Smart-Cell repeater improves service in the 700MHz, 800MHz, 850MHz, 1900MHz,
2100MHz, 2500MHz and 2600MHz frequency bands. User may select frequency band
according to the site peculiarities. After receiving a weak signal from donor antenna, the
repeater improves and sends securely isolated signal out to service antenna.
Amplifier unit is designed for correspondent operation with digital filter module (DFM).
(except for 2500MHz-SMT-T33)
The AMP unit consists of a down and up converters, cavity filter and power amplifier
(PAU).
In Downlink Path, a weak RF signal is received from Donor Antenna. Being converted from
RF to IF signal, it is transferred to the DFM, where after digitalizing by DA converter, signal
is filtered by FPGA. After filtering digital, signal is converted into analog RF signal with
modulator. Transmit to amplifier. Desirable signal is amplified and outputted through
Service Antenna. Uplink path works vice versa.
1
2
3
5
4