NDLI: Interaction between leaky surface acoustic waves in periodic gratings of thick metal electrodes

Content Provider	IEEE Xplore Digital Library
Author	Grigorievski, V.I.
Copyright Year	2002
Description	Author affiliation: Inst. of Radio Eng. & Electron., Acad. of Sci., Fryazino, Russia (Grigorievski, V.I.)
Abstract	It is shown that effective permittivity function in the complex plane of slowness for 36-42 degrees rotated lithium tantalate substrates apart from the well-known LSAW exhibits an additional singular point. The pole is located between "fast shear" and "longitudinal" branch points and can be numerically found out when appropriate branch line is drawn from the "fast shear" branch point. The effective propagation velocity of this leaky mode on 36 degrees rotated lithium tantalate equals 4723 m/s that is 1.1 times larger than the velocity of fast shear SSBW propagating in the same direction. The intrinsic attenuation of this mode is extremely high and equal to 6.93 dB/wavelength. The previously reported PSAW-like mode in periodic system of metal electrodes is associated with this new mode.
Sponsorship	Ultransonics Ferroelectr., & Frequency Control Soc
Starting Page	339
Ending Page	342
File Size	215665
Page Count	4
File Format	PDF
ISBN	0780375823
ISSN	10510117
DOI	10.1109/ULTSYM.2002.1193415
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface acoustic waves Acoustic waves Gratings Electrodes Lithium compounds Permittivity Attenuation Dielectric substrates Acoustical engineering Acoustic propagation
Content Type	Text
Resource Type	Article

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