beam parametric amplifier

beam parametric amplifier

[′bēm ‚par·ə′me·trik ′am·plə‚fī·ər]
(electronics)
Parametric amplifier that uses a modulated electron beam to provide a variable reactance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.