Patent · US Active

Compensation of resonators for substrate and transducer asymmetry

US7569971B2 · kind B2 · utility

16Cited by

12References

20Claims

0Family size

Assignee

Delaware Capital Formation, Inc. · US

Inventors

Jeffrey C. Andle · Bangor, US
Bert Wall · Potsdam, DE

Key dates

Filing date	Oct 2, 2007
Grant date	Aug 4, 2009
Priority date	—
Expiry date	Feb 28, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH03H9/02685
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An in-line SAW resonator employs an asymmetric adjustment of the Bragg frequencies of the left outer reflector and right outer reflector where the degree of periodicity shift and the relative direction of the frequency shift are calculated to move the peaks of the acoustic standing wave trapped between the gratings to coincide with the optimized centers of transduction of one or more interdigital transducers (IDTs) without the need for undesirable breaks in the periodicity or the use of reflectionless IDTs.

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