Investigation on SAW properties of LGS and optimal cuts for high-temperature applications

Investigation on SAW properties of LGS and optimal cuts for high-temperature applications

A promising perspective for surface acoustic wave (SAW) device applications at high temperature has been opened by langasite (LGS). The SAW properties of LGS in singly and doubly rotated cuts at 250/spl deg/C are investigated. Three noticeable regions for SAW-cut orientations and propagation directi...

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Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2005-11, Vol.52 (11), p.2075-2080
Hauptverfasser: Ji, XiaoJun, Han, Tao, Shi, WenKang, Zhang, GuoWei
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic propagation
Acoustic signal processing
Acoustic waves
Acoustics
Coefficients
Constants
Delay
Devices
Euler angles
Exact sciences and technology
Ferroelectric materials
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Load flow
Optimization
Orientation
Physics
Surface acoustic wave devices
Surface acoustic waves
Temperature dependence
Temperature sensors
Transducers
Ultrasonics, quantum acoustics, and physical effects of sound
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Zusammenfassung:A promising perspective for surface acoustic wave (SAW) device applications at high temperature has been opened by langasite (LGS). The SAW properties of LGS in singly and doubly rotated cuts at 250/spl deg/C are investigated. Three noticeable regions for SAW-cut orientations and propagation directions at high temperature are put forward and are defined by Euler angles [0/spl deg/, 20/spl deg//spl rarr/50/spl deg/, 35/spl deg//spl rarr/45/spl deg/], [0/spl deg/, 85/spl deg//spl rarr/110/spl deg/, 0/spl deg/5/spl deg/], and [0/spl deg/, 138/spl deg//spl rarr/145/spl deg/, 20/spl deg/23/spl deg/], respectively. The first region includes zero or comparatively reduced temperature coefficient of delay (TCD) (
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2005.1561677