narrow-band amplifier
narrow-band amplifier
[′nar·ō ¦band ′am·plə‚fī·ər] (electronics)
An amplifier which increases the magnitude of signals over a band of frequencies whose bandwidth is small compared to the average frequency of the band.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.