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IEVref:561-01-11ID:
Language:enStatus: Standard
Term: coupling factor, <of SAW materials>
Synonym1: coupling coefficient, <of SAW materials>
[Deprecated]
Synonym2:
Synonym3:
Symbol: ks
Definition: quantity characterizing the electromechanical behaviour as follows:

k S = 2| Δv v | MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiaadUgadaqhaaWcbaGaae4uaaqaaaaakiaayIW7caaMi8UaaGjcVlaayIW7caaMi8Uaeyypa0JaaGjcVlaayIW7caaMi8UaaGjcVlaayIW7caaMi8+aaOaaaeaacaaIYaGaaGjcVlaayIW7daabdaqaaiaayIW7caaMi8UaaGjcVpaalaaabaGaeuiLdqKaamODaaqaaiaadAhaaaGaaGjcVlaayIW7caaMi8oacaGLhWUaayjcSdaaleqaaaaa@5D77@

where Δv/v is the relative change in acoustic wave velocity produced by short-circuiting the surface potential from the open-circuit condition

Note 1 to entry: This entry was numbered 561-06-08 in IEC 60050-561:1991, Amendment 1:1995.


Publication date:2016-07
Source:
Replaces:561-01-11:2014-11
Internal notes:2016-07-26: "coefficient" replaced by "factor" and status of term containing "coefficient" revised to "deprecated" following results of ballot on C00022. See RS mail of 2016-07-06. JGO
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