Patent · US Active

SAW filter operating in a balanced/unbalanced manner

US9130538B2 · kind B2 · utility

1Cited by

10References

23Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Thomas Bauer · Schrobenhausen, DE
Andreas Detlefsen · Eichenau, DE
Stephan Bolze · Munich, DE
Ralph Durner · San Diego, US

Key dates

Filing date	May 18, 2011
Grant date	Sep 8, 2015
Priority date	—
Expiry date	Jun 8, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03H9/0085
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A SAW filter has two DMS tracks. Each DMS track includes six converters, with two converters each acting as input or output converters. The two DMS tracks are electrically connected in series by way of four pairs of coupling converters and the associated coupling lines. A common inner ground line is provided between the two DMS tracks, which extends over the entire length of the DMS tracks and crosses the coupling lines. The input converters of the first DMS track are connected to an asymmetrical port, while the output converters of the second DMS track are connected to a symmetrical port.

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