double-tuned amplifier

double-tuned amplifier

[¦dəb·əl ‚tünd ′am·plə‚fī·ər]
(electronics)
Amplifier of one or more stages in which each stage uses coupled circuits having two frequencies of resonance, to obtain wider bands than those obtainable with single tuning.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.