Patent · US Expired

Piezoelectric oscillating circuit, method for manufacturing the same and filter arrangement

US7455786B2 · kind B2 · utility

1Cited by

11References

10Claims

0Family size

Assignee

Avago Technologies Wireless IP · SG

Inventors

Robert Aigner · Winter Garden, US
Lueder Elbrecht · Munich, DE
Martin Handtmann · Riemerling, DE
Stephan Marksteiner · Putzbrunn, DE
Winfried Nessler · Munich, DE
Hans-Joerg Timme · Ottobrunn, DE

Key dates

Filing date	Jun 16, 2004
Grant date	Nov 25, 2008
Priority date	—
Expiry date	Apr 26, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49156
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In a method for manufacturing a piezoelectric oscillating circuit in thin film technology, wherein the oscillating circuit includes a predetermined natural frequency and a plurality of layers, first of all at least a first layer of the piezoelectric oscillating circuit is generated. Subsequently, by processing the first layer a frequency correction is performed. Subsequently, at least a second layer of the piezoelectric oscillating circuit is generated and processed for performing a second frequency correction.

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