quartz-crystal filter

quartz-crystal filter

[′kwȯrts ‚krist·əl ′fil·tər]
(electronics)
A filter which utilizes a quartz crystal; it has a small bandwidth, a high rate of cutoff, and a higher unloaded Q than can be obtained in an ordinary resonator.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.