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.
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The design consists of an S-band narrow-band amplifier intended to serve as the final stage of a high dynamic range subcarrier multiplexing optical link.