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High Power Pulsed Noise Sources PSN series

Photo of BWO tube

  • Powerful incoherent source
  • 1 Watt typical output power in W-band
  • High stability
  • Good flatness
  • 5GHz white noise spectrum
  • No high voltage supply required
  • Compact solid state source
  • High reliability, rugged construction
Operating Manual in PDF format (~114KB)


  • High power noise source for target illumination in noise radar systems
  • Concealed weapons detection systems
  • Noise figure measurement
  • Instruments and test equipment
  • Space and Hi-Rel systems


ELVA-1 high power noise sources employ specially designed silicon IMPATT diodes, operating in a pulse mode. It delivers the real incoherent radiation within 5 GHz bandwidth. 1 W level of output power allows to use the device for illumination of targets for the improvement of sensitivity of passive radiometers. The sources are available for all frequencies from 26 to 140 GHz. Low DC power requirements eliminate the need for complex high voltage supplies. The device is supplied with pulsed current source and triggering circuit. Both external and internal triggering modes are provided. Built-in digitally controlled generator allows to install repetition frequency within 10 Hz v 100 kHz range.


VSWR of the load should not exceed 2:1. Operating temperature range -40-+50 ŚC. Specifications would be adjusted according to customer's requirements. Please contact factory for other frequency ranges, bandwidths, pulse lengths and others. Device is designed in cylinder 120 mm length and 70 mm diameter. Special protection scheme is integrated against an application of more then one triggering pulse within 10 m s. To protect the diode the system ignores all pulses during 10 m s period after the last triggering. The device is supplied with built-in digitally controlled triggering generator with variable repetition frequency within 10Hz-100kHz. 256 values of repetition frequency are available. The desired frequency would be installed by dip switches or by 8bit TTL bus. Pulse duration would be decreased optionally up to 5 ns using fast PIN switch, FPS series. To control the amplitude of the source Voltage Controlled Attenuator VCVA series would be supplied optionally. Typical picture of noise pulse measured on the output of detector with 50-Ohm load is presented below:

How to Order :
Specify Model Number PNS-XX-ABBC
XX- waveguide band (WR-Number)
A - flange type :
R = round or S = square (WR-28 only)
BB v pulse duration in nanoseconds 
C v AC voltage power supply options
1 = 110 VAC/60Hz ,or
2 = 220 VAC/50Hz, or
3 = 100VAC/50Hz power supplies