Andrew Corporation – Base Station Systems Group Page 2
Proprietary – Use pursuant to Company Instruction
Functional Blocks:
The OneBase™ Cell Extender subrack is comprised of the following functional blocks:
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RFIM (Radio Frequency Interface Module):
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MCPAs (Multi-carrier Power Amplifiers—850 MHz or 1900 MHz)
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SCM (Switch Combiner Module)
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Filter Module (850 MHz or 1900 MHz)
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PDP (Power Distribution Panel)
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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.
