The XTD400 is a compact self contained antenna mountable power amplifier designed for low cost installation and long life. The XTD400 design eliminates the need for an amplifier shelter as well as a long waveguide run between the amplifier and the antenna feed horn. RF filters, cooling, and monitoring & control (M&C) systems are all self contained within the High Power Amplifier (HPA). These features provide high reliability, low maintenance costs, and low replacement costs.
The XTD400 uses high efficiency dualstage collector Traveling Wave Tubes (TWT).
Some benefits of this type of TWT are:
• Reduced prime power consumption
• Lower internal operating temperatures
• Reliability enhancement
These benefits are obtained for both the linear and saturated modes of operation. The XTD400 incorporates power factor correction circuitry which minimizes line current distortion and reduces the required voltamps. The combination of power factor correction and high efficiency TWTs reduces input VoltAmps by 45% when compared to equivalent amplifiers. A high frequency resonant conversion power supply is used that accepts a wide range of prime power (100 to 260 VAC). The automatic features of the power supply include quick recovery from prime power outages and multiple helix fault resets (three fault cycles). A complete serial M&C system is built into the unit. The XTD400 may be configured for single thread, redundant, phasecombined, to linearized operation.
For more details see Data Sheet: Xicom XTD-400C_X_K Rev 6
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