Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

2007-02-20

2007-02-20

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

C333S151000, C333S194000

Reexamination Certificate

active

11029500

ABSTRACT:
The present invention provides a surface acoustic wave device that allows a plurality of surface acoustic wave filters to be formed on a single chip and permits greater miniaturization. The surface acoustic wave device comprises a piezoelectric substrate, a first surface acoustic wave resonator formed on the piezoelectric substrate, and a second surface acoustic wave resonator formed on the piezoelectric substrate in the surface acoustic wave propagation direction of the first surface acoustic wave resonator. The positions in which the first and second surface acoustic wave resonators are formed on the piezoelectric substrate are in an at least partially overlapping relationship in a surface acoustic wave propagation region that is defined by virtually extending the respective openings of the first and second surface acoustic wave resonators. The surface acoustic wave device further comprises a part for dividing the overlap surface acoustic wave propagation region into an upper half and a lower half and for affording the phases of surface acoustic waves that are propagated by the first surface acoustic wave resonator a mutually antiphase relationship in the upper-half region and lower-half region thus divided.

REFERENCES:
patent: 4353043 (1982-10-01), Gunton
patent: 05-102783 (1993-04-01), None
patent: 2000-013179 (2000-01-01), None
patent: 2003-051731 (2003-02-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3835656