User's Manual

RF Power Amplifiers
Andrew Corporation – Power Amplifier Group
Propriety – Use pursuant to Company Instruction
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Introduction
This document presents description of the Andrew Corporation 45W UMTS 850MHz
MCPA (Multi-Carrier Power Amplifier). The MCPA amplifier is a high power, low
distortion RF amplifier intended to provide signal amplification and conditioning. The
MCPA amplifier is compatible with the UMTS WCDMA air interfaces operating in U.S.
domestic cell sites where FCC compliance is mandatory.
The 45W UMTS 850MHz MCPA operates in the Cell band (869 MHz to 894 MHz) and
is capable of amplifying up to 2 input signals of the same UMTS WCDMA modulation
types to a composite power level of 45 Watts.
MCPA Specifications
The 45W 850MHz MCPA provides linear amplification of multi-carrier UMTS signals in
the cellular bands. The MCPA has the following specifications:
Parameter Specification
Operating RF Band 869-894 MHz
Instantaneous BW 10 MHz
Input DC Power 357Watts max
DC voltage input range -36 VDC to -60 VDC, -48 VDC, nominal
Rated Output Power
@-48 VDC input
45W average
DC-RF Efficiency 14%, rated output power, nominal input voltage
Input signal types UMTS WCDMA
Physical dimensions 335mm(H)X450mm(W)X400mm(D)
Weight < 23.2 lbs
Cooling technique
Integral forced convection heat sink. Need external
fan tray for forced air cooling.
Temperature Range
-5°C to +55°C operational and meeting
specifications.
Table 1 MCPA Specifications