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Section 1
Amplifier System Description
1.1 Introduction
This manual contains information and procedures for installation, operation, and maintenance of Paradigm
Wireless Systems MAF800-100S multi-carrier cellular amplifier. This manual is organized into the
following sections:
Section 1. Amplifier System Description
Section 2. Specifications
Section 3. Principals of Operation
Section 4. Operating Instructions
Section 5. Installation
Section 6. Maintenance
Section 7. Troubleshooting
1.2 General Description
The MAF800-100S is a linear, feed forward power amplifier that operates in the 25 MHz frequency range
from 869 MHz to 894 MHz. The average output power of the amplifier is 100 Watts average AMPS,
CDMA, CDMA 2000, 1xEV-DO, GSM, TDMA, and EDGE. The amplifier is designed to operate in a
maximum of two continuous modulations or a total instantaneous bandwidth of 25 MHz. The amplifier can
simultaneously transmit multiple frequencies, with a better than –13 dBm third order intermodulation
distortion. The amplifier is designed and suited for use in CDMA, TDMA, EDGE and GSM radio base
stations. A sub-rack is employed to combine the outputs of up to (4) MAF800-100S amplifiers. Each plug-
in module operates in parallel to produce a high peak output power and fail safe redundancy for trouble free
operation with minimum maintenance. A multi-color LED detects when a fault condition has occurred
within the amplifier. The LED will turn from GREEN to RED during an amplifier fault condition.
Each amplifier has a status connector that allows the host system to monitor the amplifier module
performance. Monitoring of the amplifiers is done through the D-subminiature connector on the back of the
MAF800-100S amplifiers. The front panel of the MAF800-100S amplifier has an ON/OFF circuit breaker.
Primary +27 Vdc power for the MAF 800-100S amplifiers is provided through the sub-rack assembly.
The sub-rack contains the fan assembly for cooling each amplifier. Cooling fans are used to pull air through
the heat sinks. Air movement across the heat sinks dissipates the heat generated by the amplifiers. Constant
airflow ensures the amplifiers performance to specifications.
Section 2
MAF800-100S Electrical Specification
Parameter
Frequency
RF Gain
Gain Variation over Temperature
Gain Flatness
Intermodulation Distortion
Specification
869-894 MHz
58 dB
0.3 dB
0.5 dB
≤ -13 dBm
1
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