Multimode surface acoustic wave filter with a coupling section n

Details Multimode surface acoustic wave filter with a coupling section n Multimode surface acoustic wave filter with a coupling section n

1997-03-31

2000-09-19

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313D, H03H 964

Patent

active

06121860&

ABSTRACT:
The multimode surface acoustic wave filter includes two surface acoustic wave resonators closely arranged on a piezoelectric substrate in a direction perpendicular to the propagation direction of surface acoustic waves and acoustically coupled by a coupling section, each of the surface acoustic wave resonators including an interdigital transducer and two reflectors disposed closely on both sides of the interdigital transducer in a direction parallel to the propagation direction of the surface acoustic waves, the interdigital transducer having an excitation section for exciting the surface acoustic waves and a signal terminal section for inputting an electric signal, each of the reflectors having a grating section and a terminal section, wherein the velocity of surface acoustic waves propagating through the coupling section is a little larger than the velocity of the surface acoustic waves propagating through the excitation section of the interdigital transducer.

REFERENCES:
patent: Re33957 (1992-06-01), Nakazawa et al.
patent: 4810920 (1989-03-01), Yamamoto
patent: 4999535 (1991-03-01), Mariani et al.
patent: 5374908 (1994-12-01), Wright

Affiliated with

Also associated with

Rating

Multimode surface acoustic wave filter with a coupling section n does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1077362