Boundary acoustic wave device

Details Boundary acoustic wave device Boundary acoustic wave device

2008-01-08

2009-02-10

Dougherty, Thomas M (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07489064

ABSTRACT:
A boundary acoustic wave device includes a quartz substrate, an IDT located on the substrate, and a dielectric arranged so as to cover the IDT. A boundary acoustic wave propagates across a boundary between the quartz substrate and the dielectric. The thickness of the IDT is determined so that the velocity of the SH boundary acoustic wave is below those of a slow transverse wave propagating across the quartz substrate and a slow transverse wave propagating across the dielectric. The Eulerian angles of the quartz substrate lie within hatched regions in FIG.13.

REFERENCES:
patent: 6046656 (2000-04-01), Mishima
patent: 6218763 (2001-04-01), Fujimoto et al.
patent: 6369667 (2002-04-01), Kadota et al.
patent: 6437668 (2002-08-01), Nakao et al.
patent: 6737941 (2004-05-01), Tournois
patent: 6972508 (2005-12-01), Kandou et al.
patent: 7009468 (2006-03-01), Kadota et al.
patent: 7126251 (2006-10-01), Solal et al.
patent: 7323803 (2008-01-01), Kando
patent: 7355319 (2008-04-01), Kando
patent: 7360292 (2008-04-01), Ladabaum
patent: 2003/0168930 (2003-09-01), Kando et al.
patent: 2005/0162048 (2005-07-01), Solal et al.
patent: 2006/0071579 (2006-04-01), Kando
patent: 2006/0175928 (2006-08-01), Kando
patent: 2007/0096592 (2007-05-01), Kadota et al.
patent: 2007/0229192 (2007-10-01), Miura et al.
patent: 1 538 748 (2005-06-01), None
patent: 07-046079 (1995-02-01), None
patent: 07-212174 (1995-08-01), None
patent: 10-084246 (1998-03-01), None
patent: 10-335974 (1998-12-01), None
patent: 2002-152003 (2002-05-01), None
patent: 98/52279 (1998-11-01), None
Official communication issued in the International Application No. PCT/JP2006/309464, mailed on Aug. 29, 2006.
Yamashita, et al., “Highly Piezoelectric SH-Type Boundary Waves”, Technical Report of IEICE, Sep. 1996, pp. 21-26.
Official communication issued in counterpart European Application No. 06746273.9, mailed on Sep. 8, 2008.
Abbott et al.: “A Minimal Diffraction Cut of Quartz for High Performance Saw Filters,” IEEE Ultrasonics Symposium; Oct. 22-25, 2000 IEEE; pp. 235-239.
Campbell et al.: “A Method for Estimating Optimal Crystal Cuts and Propagation Directions for Excitation for Piezoelectric Surface Waves,” IEEE Transactions on Sonics and Ultrasonics; vol. 15; No. 4; Oct. 1968; pp. 209-217.
Irino et al.: “Theoretical Study of Stoneley Waves in a Structure of Two Piezoelectric Media,” Acoustical Society of Japan, Collection of Papers; Mar. 1984; 689-690.
“Elastic Wave Device Technology Handbook,” Edited by Japan Society for the Promotion of Science; Elastic Wave Device Technology; 150th Committee Meeting; First Impression of the First Edition; Nov. 30, 1991; five pages.
“Nihon Onkyo Gakkai Shi,” Journal of the Acoustical Society of Japan; vol. 36; No. 3; 1980; pp. 140-145; (including English abstract).
Hongo et al.: “Analysis of Elastic Boundary Waves in a Quartz/LiTaO3 Structure,” Acoustical Society of Japan, Collection of Papers; Sep. 1998; pp. 1055-1056.

Affiliated with

Also associated with

Rating

Boundary acoustic wave device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Boundary acoustic wave device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boundary acoustic wave device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4061622