Precision Calibrated Solid State Noise Sources

ELVA-1 solid-state noise source ISSN series delivers a uniform level of noise power spectral density within the whole waveguide frequency range. Sources are available in eight waveguide bands covering 26.4-170 GHz (so called Ka; Q; U; V; E; W; F; D bands). The noise sources, which use silicon IMPATT diode as a base block, are compatible with many branded noisemeters on the market, for example HP 8970 or Ranatec Noise Figure Meter 7100. The supply voltage for Noise Sources is 28VDC with the current consumption of 60mA that ensure the compatibility with widely used noisemeters from third companies. This level of 60mA current consumption is true for all Noise Source models below 75GHz. For upper frequencies an external power supply (that come as shipment option) should be used, and +28VDC input should be attached to noise meter as usual. In this case it will be used for triggering (on/off switching of noise source). The typical value of ENR is 15dB with a typical flatness of 1.5dB. All Noise Sources of ISSN series are shipped with Calibration Passports. High stability of the sources allows them to be used for test and instrumentation applications in replace of commonly used gas-tube noise sources. The additional advantage of silicon technology is low DC power requirements. This eliminates the need for complex high voltage supplies. There are two operation modes: CW mode and pulsed AM mode with modulation frequency up to 1 kHz.