Andrew Corporation – Base Station Systems Group Page 1
Proprietary – Use pursuant to Company Instruction
Introduction:
The OneBase™ Cell Extender subrack is a high-power, mixed-mode RF front-end
equipment solution which provides signal amplification and conditioning for both uplink
and downlink cellular base station signals. It is a highly modular design, consisting of a
minimal set of unique field-replaceable units, capable of being configured and scaled for
a variety of system level capacities and air interfaces including TDMA, GSM/EDGE,
CDMA, WCDMA and analog air interfaces.
System Specifications:
System specifications for the OneBase™ Cell Extender Subrack are:
Parameter
Specification
Frequency Bands
850 MHz Band Tx: 869-894 MHz
1900 MHz Band Tx: 1930-1990 MHz
25 MHz (29 MHz for -20dB bandwidth, nominal)
Operation Bandwidth
60 MHz (70 MHz for -20dB bandwidth, nominal)
Input / Output Impedances
50 Ohms
Supply Voltage
+21 VDC to +30 VDC
Nominal Passband Gain (dB)
55 dB +/- 1 dB
Power Amplifier Module Power
Rating
135 Watts
Subrack Capacity
4 MCPAs
Total Rated Mean Output Power
426 Watts (+56.3 dBm)
Supported Output Power (Typical)
40 Watts/carrier (WCDMA)
25 Watts/carrier (TDMA)
25 Watts/carrier (CDMA)
25 Watts/carrier (GSM/EDGE)
DC current draw
<140 Amps per Subrack
In-Band emissions
-13 dBm/MHz
Receive Path Noise Figure
3.5 dB
