parametric amplifier

Definitions

Electronics

  • A microwave amplifier whose main oscillator is tuned to the received frequency while a pumping oscillator of a different frequency varies one or more parameters, such as capacitance or reactance, of the main oscillator. The energy from the pumping action amplifies the applied signal. Such amplifiers feature a very low noise level, and are used, for instance, in satellite communications and radars. Its abbreviation is paramp.
  • abbreviationparamp
http://www.dictionarycentral.com/definition/parametric-amplifier.html