Zobrazeno 1 - 10
of 27
pro vyhledávání: '"V.I. Grigorievski"'
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 53:393-401
The high-phase velocity (above 6100 m/s in and aluminum (Al) grating on lithium niobate (LiNbO/sub 3/)) of the longitudinal leaky surface acoustic wave (SAW) (LLSAW) mode makes it attractive for application in high-frequency SAW ladder filters in the
Publikováno v:
2007 IEEE Ultrasonics Symposium Proceedings.
Surface transverse wave-resonators with resonant frequency near 1900 MHz on AT-cut of quartz with different periods of interdigital transducer and reflectors are reported. It is established that for metal thickness to wavelength ratio 1.9% the use of
Publikováno v:
2007 IEEE Ultrasonics Symposium Proceedings.
Interface acoustic waves with predominantly longitudinal elastic displacements in continuous materials of lithium niobate and lithium tantalate are reported. The interface is represented by the electrically conducting layer or periodic sequence of me
Publikováno v:
2006 IEEE Ultrasonics Symposium.
Resonant characteristics of longitudinal leaky surface acoustic waves (LLSAW) in infinite periodic interdigital transducers (IDT) with layered electrodes are calculated. An electrode is assumed to be consisted of two parts - under-layer of crystal ma
Publikováno v:
2006 Multiconference on Electronics and Photonics.
Designed and measured characteristics of "hiccup" and non-synchronous surface acoustic wave resonators on quartz are presented and analyzed. In "hiccup" configuration basic periodicity of interdigital transducer and reflectors is the same except for
Publikováno v:
International Symposium on and National Conference on Acoustoelectronics. Program and Abstracts Surface Waves in Solid and Layered Structures.
Publikováno v:
International Symposium on and National Conference on Acoustoelectronics. Program and Abstracts Surface Waves in Solid and Layered Structures.
Longitudinal leaky surface acoustic waves in periodic systems of metal electrodes on lithium niobate
Publikováno v:
IEEE Symposium on Ultrasonics, 2003.
The LLSAW in lithium niobate on stress-free surface reveals rather high attenuation of the order of one dB per wavelength. Calculated resonant characteristics of a long IDT and dispersion curves of LLSAW propagating in periodic electrode structures s
Autor:
V.I. Grigorievski
Publikováno v:
2002 IEEE Ultrasonics Symposium, 2002. Proceedings..
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" an
Autor:
Victor Plessky, V.I. Grigorievski, L. Kopp, M.M. Salomaa, Marc Solal, T. Makkonen, W. Steichen
Publikováno v:
2002 IEEE Ultrasonics Symposium, 2002. Proceedings..
The high velocity (above 6000 m/s in LiNbO/sub 3/) of the longitudinal leaky SAW (LLSAW) mode makes it attractive for use in high frequency SAW devices in the 2-3 GHz range. We have investigated, both experimentally and theoretically, the dependence