User Manual

NTGS86AB Installation & Service Manual
4-4.3 Main Amplifier
The main amplifier is a class AB amplification stage for maximum efficiency. The RF output signal
from the main amplifier is then applied to an isolator. The amplifier power performance is moni-
tored by the microprocessor via the forward and reverse detectors. The final output power is typi-
cally 44 dBm. The amplifier operates on +26 Vdc with gate bias voltages controlled by the micro-
processor.
Figure 4-1 NTGS86AB Single-Channel Power Amplifier Functional Block Diagram
4-5 Amplifier Module Cooling
Each amplifier module is contained within a thermally conductive chassis which, when properly
mounted on an adequate thermal surface, will provide sufficient cooling to maintain the amplifier
within the specified operating temperature range.
4-6 Power Distribution
Primary DC power for the amplifier is provided by the host system. The amplifier generates all the
required voltages internally from the main source.
 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved
044-05126 Rev. A 4-2 October 2002