Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1996-10-07
2000-03-14
Lee, Benny
Wave transmission lines and networks
Coupling networks
Electromechanical filter
310313A, 310313B, 310360, 333194, H03H 925, H03H 964, H03H 9145
Patent
active
060378476
ABSTRACT:
A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiTaO.sub.3 and an electrode pattern provided on the piezoelectric substrate. The electrode pattern contains Al as a primary component and has a thickness in a range of 0.03-0.15 times a wavelength of a surface acoustic wave excited on the piezoelectric substrate. The piezoelectric substrate has an orientation rotated about an X-axis thereof from a Y-axis thereof toward a Z-axis thereof, with a rotational angle of 39-46.degree..
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Endoh Gou
Hashimoto Ken-ya
Ikata Osamu
Kawachi Osamu
Ueda Masanori
Fujitsu Limited
Lee Benny
Summons Barbara
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