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cavity resonator

noun, Electronics.
1.
See under resonator (def 4a).

resonator

[rez-uh-ney-ter] /ˈrɛz əˌneɪ tər/
noun
1.
anything that resonates.
2.
an appliance for increasing sound by resonance.
3.
an instrument for detecting the presence of a particular frequency by means of resonance.
4.
Electronics.
  1. a hollow enclosure (cavity resonator) made of conducting material of such dimensions that electromagnetic radiation of a certain frequency will resonate.
  2. any circuit having this frequency characteristic.
Origin
1865-1870
1865-70; resonate + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cavity-resonator

cavity resonator

noun
1.
(electronics) a conducting surface enclosing a space in which an oscillating electromagnetic field can be maintained, the dimensions of the cavity determining the resonant frequency of the oscillations. It is used in microwave devices for frequencies exceeding 300 megahertz Also called resonant cavity, rhumbatron

resonator

/ˈrɛzəˌneɪtə/
noun
1.
any body or system that displays resonance, esp a tuned electrical circuit or a conducting cavity in which microwaves are generated by a resonant current
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for cavity-resonator

resonator

n.

instrument or chamber formed to respond to a single tone, 1869, agent noun in Latin form from resonate (v.).

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for cavity-resonator

resonator

acoustical device for reinforcing sound, as the sounding board of a piano, the "belly" of a stringed instrument, the air mass of an organ pipe, and the throat, nose, and mouth cavities of a vocal animal. In addition to augmenting acoustic power, resonators may also, by altering relative intensities of overtones, change the quality of a tone. See also soundboard. The Helmholtz resonator is an enclosed volume of air communicating with the outside through a small opening. The enclosed air resonates at a single frequency that depends on the volume of the vessel and the geometry of its opening. The term resonator also denotes a system of electrons within a molecule or ion that absorbs electromagnetic waves of particular (resonance) frequencies (see chromophore).

Learn more about resonator with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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14
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