Surface acoustic wave resonator and surface acoustic wave...

Details Surface acoustic wave resonator and surface acoustic wave... Surface acoustic wave resonator and surface acoustic wave...

2011-03-29

2011-03-29

SanMartin, J. (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R

Reexamination Certificate

active

07915784

ABSTRACT:
A surface acoustic wave resonator includes a rotated Y-cut quartz substrate with a cut angle θ of about −53° to about −52° and an IDT electrode made of aluminum or an alloy primarily including aluminum provided on the quartz substrate. The propagation direction of surface acoustic waves is within a range of about 90°±5° with respect to the X axis. A SiO2film is arranged to cover the quartz substrate and the IDT electrode. The thickness of the IDT electrode is in a range of about 6.0% to about 6.5% of λ, where λ is the wavelength of surface acoustic waves, and the duty ratio of the IDT electrode is in a range of about 0.62 to about 0.66.

REFERENCES:
patent: 4480148 (1984-10-01), Archer
patent: 6940208 (2005-09-01), Kando
patent: 7132779 (2006-11-01), Kando
patent: 2002/0074899 (2002-06-01), Nakao et al.
patent: 2006/0145568 (2006-07-01), Morita et al.
patent: 10-163802 (1998-06-01), None
patent: 11-017485 (1999-01-01), None
patent: 11-055068 (1999-02-01), None
patent: 2002-135077 (2002-05-01), None
patent: 2002-261571 (2002-09-01), None
patent: 2006-165746 (2006-06-01), None
Official Communication issued in International Patent Application No. PCT/JP2007/070694, mailed on Dec. 4, 2007.
Official Communication issued in the counterpart Japanese Application No. 2008-546915, mailed on Mar. 31, 2009.

Affiliated with

Also associated with

Rating

Surface acoustic wave resonator and surface acoustic wave... does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2737670