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Circuit Aspects of Parametric Amplifiers

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2 Author(s)
Seidel, H. ; Bell Telephone Laboratories, Incorporated, Murray Hill, N.J. ; Herrmann, G.F.

Parametric amplifiers are distinguished from most active networks in that power is taken directly from an a-c source and that the phase of this source is significant in the amplification process. As a consequence of the harmonic spectrum produced by the interaction of the power source (pump) and the nonlinear element, the introduction of a small signal generates a pair of sidebands about each harmonic. Networks with variable parameters may be handled with an extension of the conventional formalism into one of frequency as well as spatial scattering.

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Broadcast and Television Receivers, IRE Transactions on  (Volume:BTR-5 ,  Issue: 3 )