a type of high-frequency amplifier in which energy from a pumping oscillator is transferred to the input signal through a circuit with a varying parameter, usually a varying reactance
parametric amplifier in American English
noun
Electronics
a device, as an electron tube or transistor, that amplifies a high-frequency input signal by sinusoidally varying the reactance of the circuit
Word origin
[1955–60]This word is first recorded in the period 1955–60. Other words that entered Englishat around the same time include: cassette, geodesic dome, new wave, opioid, rollout
Examples of 'parametric amplifier' in a sentence
parametric amplifier
Using a superconducting parametric amplifier, we perform heterodyne detection of the fluorescence of a superconducting qubit.
P. Campagne-Ibarcq, P. Six, L. Bretheau, A. Sarlette, M. Mirrahimi, P. Rouchon, B.Huard 2016, 'Observing Quantum State Diffusion by Heterodyne Detection of Fluorescence', Physical Review Xhttp://doi.org/10.1103/PhysRevX.6.011002. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We observe the splitting of mechanical mode in the response spectra of a phase-sensitive parametric amplifier.
Shuhui Wu, Jiteng Sheng, Xiaotian Zhang, Yuelong Wu, Haibin Wu 2018, 'Parametric excitation of a SiN membrane via piezoelectricity', AIP Advanceshttp://dx.doi.org/10.1063/1.5009952. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)