lower-sideband upconverter

lower-sideband upconverter

[′lō·ər ¦sīd‚band ′əp·kən‚vərd·ər]
(electronics)
Parametric amplifier in which the frequency, power, impedance, and gain considerations are the same as for the nondegenerate amplifier; here, however, the output is taken at the difference frequency, or the lower sideband, rather than the signal-input frequency.