Title :
Applications for piezoelectric leaky surface waves
Author :
Yamanouchi, Kazuhiko ; Takeuchi, Masao
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
The properties of piezoelectric leaky surface waves (PLSWs) in LiNbO3, LiTaO3, quartz, etc. are summarized. Applications of leaky surface waves, (e.g., in filters with a low-loss and wide bandwidth, voltage-controllable oscillators with a wide bandwidth for mobile communications systems, and temperature stable oscillators) are presented. In particular, it is shown that PLSWs have better properties than surface acoustic waves (SAWs) and that the boundary between metal and free surfaces is important for low-loss devices. Possible future applications of leaky surface waves are described
Keywords :
crystal resonators; mobile communication systems; piezoelectric devices; surface acoustic wave devices; surface acoustic wave filters; variable-frequency oscillators; LiNbO3; LiTaO3; SiO2; filters; low-loss; low-loss devices; mobile communications; piezoelectric leaky surface waves; quartz; temperature stable oscillators; voltage-controllable oscillators; wide bandwidth; Acoustic waves; Bandwidth; Filters; Mobile communication; Sawing machines; Surface acoustic wave devices; Surface acoustic waves; Surface waves; Temperature; Voltage-controlled oscillators;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171319
