Patent · US Active

Component operated by guided acoustic waves

US7948333B2 · kind B2 · utility

2Cited by

9References

19Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Werner Ruile · Birkenfeld, DE
Markus Hauser · Feldafing, DE
Ulrike Roesler · Hebertshausen, DE

Key dates

Filing date	Nov 20, 2006
Grant date	May 24, 2011
Priority date	—
Expiry date	Feb 12, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03H3/02
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A component working with guided acoustic waves includes a layer system configured to guide waves in a lateral plane. The layer system includes a piezoelectric layer, electrodes on the piezoelectric layer for exciting the wave, a dielectric layer with an acoustic impedance, and an adjustment layer with an acoustic impedance. A ratio of the acoustic impedance of the adjustment layer to the acoustic impedance of the dielectric layer is greater than 1.5.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.