Directivity Pattern
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directivity pattern
[də‚rek′tiv·əd·ə ‚pad·ərn] (engineering acoustics)
A graphical or other description of the response of a transducer used for sound emission or reception as a function of the direction of the transmitted or incident sound waves in a specified plane and at a specified frequency. Also known as beam pattern; directional response pattern.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Directivity Pattern
(1) For a transmitting antenna, a graphic representation in polar coordinates of the dependence of the electric field strength of the radiated wave on the direction of radiation (assuming that the field strength is measured at a large and constant distance from the antenna).
(2) For a receiving antenna, a graphic representation in polar coordinates of the dependence of the electromotive force induced in the antenna on the direction of the incident wave (given a field strength at the antenna location that is equal for all waves incident from any direction).
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.