The Xicom XTD-750 is a compact, self-contained, antenna mountable power amplifier designed for
low cost installation and long life. The XTD-750 design eliminates the need for an amplifier
shelter as well as a long waveguide run between the amplifier and 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.
XTD-750C Features
No Shelter Required
Short Waveguide Run
Variable Gain
High Efficiency Dual-Stage TWTs
Complete RS-232/422/ 485 Interface
The XTD-750 uses high efficiency, dual-stage collector Traveling Wave Tubes (TWT). Some benefits
of this type of tube are: reduced prime power consumption, lower internal operating temperatures,
reliability enhancement.
The XTD-750 incorporates power factor correction circuitry, which minimizes line current distortion
and reduces the required Volt-Amps. The combination of power factor correction and high efficiency
TWTs reduces input Volt-Amps by 45% when compared to equivalent amplifiers. A high frequency
resonant conversion power supply is used that accepts a wide range of prime power
(180 to 260 VAC). The automatic features of the power supply include quick recovery from
prime power outages and multiple helix arc fault resets (three fault cycles).
A complete serial M&C system is built into the unit.
The XTD-750 may be configured for single thread, redundant, phase-combined,
or linearized operation.
FREQUENCY RANGE
13.75 to 14.5 GHz
(12.75 to 14.5 GHz) (option)
Output Power
Traveling Wave Tube
750 Watts
Rated Power @ Amplifier Flange
650 Watts
Gain
Large Signal, minimum
70 dB
Small Signal, minimum
75 dB
Attenuator Range (continuous)
25 dB
Maximum SSG Variation Over:
Any narrow band
Full Band
1.0 dB per 80 MHz
2.5 dB per 500 MHz
Slope, maximum
± 0.04 dB/MHz
Stability, 24 Hr maximum
± 0.25 dB
Stability, Temperature
± 1.0 dB maximum over temperature range at any frequency
Intermodulation
with two equal signals
- 18 dBc maximum with two equal carriers at
4 dB total power backoff from rated output
HARMONIC OUTPUT, maximum
- 60 dBc
AM/PM CONVERSION, maximum
2.5 deg/dB at 6 dB below rated output power
NOISE POWER, maximum
Transmit Band
Receive
- 70 dBW/4 kHz
- 150 dBW/4 kHz
10.95 to 12.75 GHz
Group Delay Max over any 80 MHz Bandwidth
Linear
Parabolic
Ripple
