Patent · US Expired

Surface acoustic wave filter with plural substantially identical acoustic tracks

US6060964A · kind A · utility

3Cited by

5References

3Claims

0Family size

Assignee

Siemens Matsushita Components GmbH & Co. KG · DE

Inventors

Thomas Baier · Birkenfeld, DE
Jurgen Machui · Munich, DE
Isidor Schropp · Ernsgaden, DE
Gunter Muller · Karlsruhe, DE

Key dates

Filing date	Jun 19, 1998
Grant date	May 9, 2000
Priority date	—
Expiry date	Jun 19, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH03H9/6426
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

The surface acoustic wave (SAW) filter has two or more identical acoustic tracks. The input side of the tracks is electrically connected in parallel and the output side is electrically connected in series, whereby the impedance of input side of the SAW filter is reduced relative to the impedance of the individual acoustic tracks.

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