User 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 850 Band HPRM (High
Power Radio Module) amplifiers. The HPRMA850 amplifier is a high power, RF
amplifier intended to provide signal amplification and conditioning. The HPRM850
amplifier is compatible with GSM and EDGE air interfaces operating in U.S. domestic
cell sites where FCC compliance is mandatory.
The Cell band (869 MHz to 894 MHz) HPRM850 RF power amplifier is capable of
amplifying a single carrier of different modulation types to a composite power level of
60Watts.
HPRM850 Specifications
The HPRM850 provide linear amplification of single-carrier signals in the cellular
frequency band. The 850 Band HPRM850 has the following specifications:
Parameter Specification
Operating RF Band 869-894MHz
In band RF gain 44dB
Input signal types GSM or EDGE single carrier
Operational Bandwidth 25 MHz (38MHz for-20dB bandwidth, nominal)
Input / Output Impedances 50 Ohms
Input DC Power +27 VDC, nominal
DC voltage input range +26.5 to +27.5VDC
Rated Output Power
@ +26.5 to +27.5VDC input
60W average GSM or 45W EDGE
DC-RF Efficiency 33%, rated output power, nominal input voltage
Physical dimensions 7.5” x 4” x 1.4”
Weight < 2lbs
Cooling technique
The HPRM is a module to be mounted onto the
customer heat sink within his frame. The module
provides a copper pallet interface for thermal cooling
by conduction.
Temperature Range 0°C to +60°C meeting specifications.
Table 1 HPRM850 Specifications
Installation and Operation Set-Up
The HPRM850 is easy to operate and use, only requiring a special cables for DC power
and a multipoint connector to provide the ON/OFF state and biasing points to the module
and report the monitoring to the system. RF input and output connections are done with
industry standard MCX and QN connectors.