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Functional Blocks:
The OneBase™ Cell Extender subrack is comprised of the following functional blocks:
− RFIM (Radio Frequency Interface Module):
− MCPAs (Multi-carrier Power Amplifiers—850 MHz or 1900 MHz)
− SCM (Switch Combiner Module)
− Filter Module (850 MHz or 1900 MHz)
− PDP (Power Distribution Panel)
− Inputs and Outputs
Inputs and Outputs:
The amplifier is powered from a DC supply voltage which can range from 20VDC-to-
30VDC (with a nominal voltage of 27 VDC). The DC power is brought into the subrack
at a terminal that is in the back of the subrack.
The RF signal is brought into the RFIM, passes into the amplifers, then through the SCM
which is blind-mate connected to the amplifiers, and finally into the Filter Modules and
subsequent antenna ports.
Andrew Corporation – Base Station Systems Group
Proprietary – Use pursuant to Company Instruction
Page 2
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