Acoustic wave filter comprising a reflector having an...

Details Acoustic wave filter comprising a reflector having an... Acoustic wave filter comprising a reflector having an...

2009-03-04

2011-11-01

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C310S31300R

Reexamination Certificate

active

08049583

ABSTRACT:
An acoustic wave filter includes a piezoelectric substrate, an IDT (interdigital transducer) formed on the piezoelectric substrate, and reflectors located at both sides of the IDT and composed of electrode fingers, at least one of the electrode fingers of at least one of the reflectors including at least one gap within a propagation path of an acoustic wave.

REFERENCES:
patent: 3970970 (1976-07-01), Worley
patent: 4267534 (1981-05-01), Tanski
patent: 4340834 (1982-07-01), Sato
patent: 4623855 (1986-11-01), Bulst
patent: 4760360 (1988-07-01), Grassl et al.
patent: 5621364 (1997-04-01), Ruile et al.
patent: 6900577 (2005-05-01), Takamine
patent: 7012480 (2006-03-01), Nakamura et al.
patent: 2004/0169568 (2004-09-01), Yip et al.
patent: 2006/0214748 (2006-09-01), Funami et al.
patent: 59-207719 (1984-11-01), None
patent: 62-202610 (1987-09-01), None
patent: 07-131291 (1995-05-01), None
patent: 7-240658 (1995-09-01), None
patent: 10-261935 (1998-09-01), None
patent: 11-168350 (1999-06-01), None
patent: 2000-196399 (2000-07-01), None
patent: 2001-127586 (2001-05-01), None
patent: 2001-156577 (2001-06-01), None
patent: 2001-285012 (2001-10-01), None
patent: 2004-266826 (2004-09-01), None
patent: 2004-343259 (2004-12-01), None
patent: 2005-198020 (2005-07-01), None
B. Wall et al.; “Balanced Driven Transversely Coupled Waveguide Resonator Filters”; 1996 IEEE Ultrasonics Symposium Proceedings; vol. 1, pp. 47-51, San Antonio, TX, Nov. 3-6, 1996.

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