Surface acoustic wave electroacoustic device using gap grating for reduced transversal modes

US12040775B2 · kind B2 · utility

Assignee

• RF360 Singapore Pte. Ltd. · SG

Inventors

• Thomas Ebner · Braunau am Inn, AT
• Philipp Geselbracht · Haar, DE
• Markus Mayer · Taufkirchen, DE
• Stefan Ammann · Winterthur, CH
• Manuel Sabbagh · Dorfen, DE

Key dates

• Filing date: Apr 27, 2021
• Grant date: Jul 16, 2024
• Expiry date: Jul 12, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03H9/725
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Aspects of the disclosure relate to an electroacoustic device that includes a piezoelectric material and an electrode structure. The electrode structure includes a first busbar and a second busbar. The electrode structure further includes a first conductive structure connected to the first busbar and a second conductive structure connected to the second busbar. The first conductive structure and the second conductive structure is disposed between the first busbar and the second busbar. The first conductive structure and the second conductive structure each include a plurality of conductive segments separated from each other and extending towards one of the first busbar or the second busbar. The electrode structure further includes electrode fingers arranged in an interdigitated manner and each connected to either the first conductive structure or the second conductive structure. The electrode fingers have a pitch that is different than a pitch of the plurality of conductive segments.