音波で動作するトランスデューサ構造体

Title:

音波で動作するトランスデューサ構造体

Document Type and Number:

Japanese Patent JP2004523179

Kind Code:

A

Abstract:

For improved conformance of a filter operating with acoustic waves, a transducer structure is provided in which the separations between respectively two adjacent electrode fingers of an inter-digital transducer (IDT_v) vary over the length of the transducer. The variation thereby preferably follows a continuous distribution function. Reactance filters that are provided with such filters in the serial branch show an improved electrical conformance in the transmission range.

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Inventors:

Thomas bauer
Martin bunner
Andreas De Trefsen
Dietmar Ritter

Application Number:

JP2002572725A

Publication Date:

July 29, 2004

Filing Date:

March 01, 2002

Export Citation:

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Assignee:

EPCOS AG

International Classes:

H01L41/09; H03H9/145; H03H9/64; (IPC1-7): H03H9/145; H01L41/09; H03H9/64

Attorney, Agent or Firm:

Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel

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