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EP0176786A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Transducer for a surface acoustic wave arrangement

Assignee: Epprecht Georg Prof Dr
•
Filing: 1985-09-02
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Granted: —
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Expires: 2005-09-02
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Abstract

Abstract Translated from German Richtwandler für SAW-Filter auf einem piezoelektrischen Substrat. Der Wandler (Fig. 3a) besteht aus mehreren Gruppen (Ga, Gb ...), die halbgruppenweise (Gal, Ga2...) mit Sammelschienen (Phl, Ph2) für zwei Phasen (1, 2) verbunden sind. Abwechselnd sind diese Halbgruppen derart auf zwei oder mehr Kanäle (K1, K2...) verteilt, daß die Fingerelektroden jeder Phase (1, 2)- über alle Kanäle betrachtet - eine mehr oder weniger lückenlose Reihe bilden. Zu jedem Kanal gehört eine für beide Phasen 1.2 gemeinsame, mäandrierende Sammelschiene M. Directional converter for SAW filters on a piezoelectric substrate. The converter (Fig. 3a) consists of several groups (Ga, Gb ...), which are connected in groups (Gal, Ga2 ...) with busbars (Phl, Ph2) for two phases (1, 2). These semigroups are alternately distributed over two or more channels (K1, K2 ...) in such a way that the finger electrodes of each phase (1, 2) - viewed over all channels - form a more or less complete row. Each channel has a meandering busbar M common to both phases 1.2.

Inventors

  • 👤 Josef Ebneter

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 14:45
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; H03H9/145; H03H9/14517; H03H9/1452; H03H9/02535; H03H9/02637; H03H9/02685; H03H9/0274; H03H9/02755; H03H9/02818; H03H9/02944; H03H9/14502; H03H9/14505; H03H9/14544; H03H9/1455; H03H9/46; H03H9/64; H03H9/6423; H03H9/6426

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