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System block diagram, Functional description, 2 system block diagram – Comtech EF Data Ku-Band Power Amplifier with Optional L-Band User Manual

Page 16: 3 functional description

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Outdoor Power Amplifier

Revision 0

Introduction

MN/ODPA.OM

1–2

The SSPA portion is line powered and provides an analog interface for fault status and
mute control.

The ODPA delivers up to 40 Watts, at the 1 dB compression point, to the transmit
waveguide flange. It provides a cost-effective and reliable replacement for TWT
amplifiers in Ku-Band terminals. Due to a small form factor, it is ideal for the
construction of small “flyaway” terminals, Intelsat earth stations, and hub earth stations
for small- to medium-size private networks or point-to-point links.

1.2 System

Block

Diagram



L-Band

10 MHz

14.0 - 14.5 GHz

PLL

X

Ku-BUC

40W - SSPA

AC

DC

10 MHz, DC, L-Band

Figure 1-2. System Block Diagram

1.3 Functional

Description

The ODPA consists of a chassis, power supply, fan assembly, Monitor and Control
Processor (MCP) and a Comtech EF Data SSPA module. The amplifier is designed using
a Comtech EF Data low loss combining technique and an MCP based temperature versus
gain compensation.