KA BAND OUTDOOR TWT AMPLIFIER
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CHAPTER 1
Introduction
1.1 Overview
The CPI Ka-Band TWTA (Traveling Wave Tube) ODU Amplifiers are designed for satellite
communication earth stations, satellite newsgathering vehicles, and flyaway applications. The key
feature of these amplifiers permits direct mounting to antenna structures, thereby eliminating
transmission line losses encountered in conventional remotely mounted arrangements. For this
reason, these amplifiers are referred to as “ Ka-Band TWT Amplifiers.”
Table 1-1 shows the model numbers, frequency ranges, and power outputs of these amplifiers.
Figure 1-1 is a photograph of a Ka-Band TWT Amplifier. All models have the same appearance.
Table 1-1. Ka-BAND TWT Amplifiers
Model Number
Frequency Range
(GHz)
Rated Power
(Watts)
T02KO
27.5 to 31.0 GHz
250W Peak
T03KO
27.5 to 31.0 GHz
250W CW
By industry convention, the rated power of an amplifier is the output power of the high power-
amplifying component, a traveling wave tube (TWT). The output power available to the user at
the amplifier output flange is lower. Peak power amplifiers offer the same linear power as their
CW (Continuous Wave) counterparts, except their rated CW power is typically 1.5 to 3dB below
their peak rating. Depending on model selected, the operating frequency range and rated CW
power level will vary.
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