Surface acoustic wave electroacoustic device for reduced transversal modes

US12231111B2 · kind B2 · utility

Assignee

• RF360 Singapore Pte. Ltd. · SG

Inventors

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

Key dates

• Filing date: Apr 27, 2021
• Grant date: Feb 18, 2025
• Expiry date: Dec 21, 2043

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 that includes a first busbar and a second busbar along with electrode fingers arranged in an interdigitated manner and including a first plurality of fingers connected to the first busbar and a second plurality of fingers connected to the second busbar. The electrode structure further includes a first conductive structure disposed between each of the first plurality of fingers and disposed between the first busbar and the second plurality of fingers. The electrode structure further includes a second conductive structure disposed between each of the second plurality of fingers and disposed between the second busbar and the first plurality of fingers. The first conductive structure and the second conductive structure each have a height that is less than a height of the second plurality of fingers.