Applied Systems Engineering 176 TWT Amplifier, 1 - 18 GHz 1kW

Rent Applied Systems Engineering 176 TWT Amplifier, 1 - 18 GHz 1kW
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Datasheet
The Applied Systems Engineering 176 TWT Amplifier has been designed specifically to operate pulsed traveling wave tubes in the 1 to 2 kW peak power range at frequencies up to 18 GHz. Particular  emphasis has been placed on the generation of the output RF pulse shape without the use of RF switches. Pulse width control is with an external pulse.

Internal power supplies are DC-DC converter designs with fast loop response times so that output level variations are minimal for any PRF including a non-periodic or burst type PRF. The modular power supplies and grid pulse generator have very low ripple, with attendant low phase noise in the TWT Amplifier.

The modular design of the Model 176 provides convenient accessibility to all elements in the TWT amplifier. Plug-in PC boards are accessible through the front panel. The PC card cover contains a legend for PC card located test points and controls. High voltage modules are encapsulated, plug-in assemblies. There is no exposed high voltage. Most modules are interchangeable between all units  regardless of frequency.

Features:

  • Frequency 1 to 18 GHz Octave / Multioctave
  • Low Spurious Outputs
  • Phase and Amplitude Stability
  • Complete TWT Protection
    • Pulse Input Protection
    • Helix Overcurrent
    • Cathode Over/Undervoltage
    • Collector Overvoltage
    • Filament Low Voltage
    • Overtemperature
    • Input Energy Limit
    • Reverse Power Monitor
  • Custom Requirements
  • Solid State Except for the TWT
  • Front Panel Voltage Adjustments
  • Front Panel Fault Isolation
  • Modular Construction
  • DC TWT Filaments
  • Four Line Display
    • Operating Mode
    • Cathode Voltage
    • Collector Voltage
    • Helix Current
    • Filament and Operate Time
  • Front Panel Controls
    • Power On / Off
    • Operate
    • Standby
    • Fault Reset
    • Local / Remote

Specifications:

  • Duty Cycle: 6.0%, Maximum
  • Pulse Width Range: 0.07 to 100 us
  • PRF Range: 0 to 400 kHz
  • RF Rise / Fall Time: 15 ns, Maximum
  • RF Pulse Droop: 0.5 dB/100 us, Maximum
  • Delay, Input to RF:  200 ns, Maximum
  • Phase Noise:. < ± 1E pk to pk
  • Amplitude Variation: 0.1 dB, Maximum
  • Spurious Outputs: -50 dBc, Maximum
  • Input Pulse: 5 Volts into 50 ohms
  • Noise Figure: 35 dB, Nominal
  • RF Connectors: Precision Type N or Waveguide
  • Primary Power:
    • 120 VAC
    • ± 10%, 50/60 Hz