Surface acoustic wave transducer

G - Physics – 10 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G10K 11/36 (2006.01) H01L 41/08 (2006.01) H03H 9/02 (2006.01) H03H 9/145 (2006.01)

Patent

CA 2282168

Summary A surface acoustic wave transducer with a piezoelectric substrate and at least two electrodes on the surface of the substrate wherein the electrodes comprise fingers which overlap with the fingers of another electrode in a projection parallel to the surface of the substrate is described. The fingers comprise coupling fingers which are located adjacent to a finger of another electrode and which have a high coupling efficiency to the surface acoustic waves. A structure with low surface acoustic wave reflection is located between at least two coupling fingers of the same electrode and the surface acoustic wave propagation velocity of the low reflecting structure and the coupling fingers is equal. Furthermore, a filter comprising the transducer is proposed.

L'invention décrite dans le présent document porte sur un transducteur à ondes acoustiques de surface avec un substrat piézoélectrique et au moins deux électrodes à la surface de celui-ci, ces dernières comportant des doigts chevauchant ceux d'une deuxième électrode de façon à former une saillie parallèle à la surface du substrat. Ces doigts comprennent des doigts d'accouplement adjacents au doigt d'une autre électrode, lesquels ont un rendement de couplage élevé avec les ondes acoustiques de surface. Une structure à faible taux de réflection des ondes acoustiques de surface est positionnée entre au moins deux doigts d'accouplement de la même électrode, la vitesse de propagation des ondes acoustiques de surface de la structure précitée et celle des doigts d'accouplement étant égale. On y propose aussi un filtre comprenant ledit transducteur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFCA-PAI-O-1414058

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.