The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2024
Filed:
Jul. 14, 2020
Rf360 Singapore Pte. Ltd, Republic Plaza, SG;
Matthias Pernpeintner, Munich, DE;
RF360 Singapore Pte. Ltd., Singapore, SG;
Abstract
An electroacoustic resonator comprises a substrate () with a piezoelectric material and an interdigital electrode structure on a top side () of the substrate. The electrode structure comprises a first electrode () and a second electrode () each with a busbar () and a plurality of fingers (). The fingers of both electrodes interdigitate. The region of the top side between the two busbars is subdivided into two barrier regions (), two trap regions () and one track region (), the trap regions being located between the two barrier regions and the track region being located between the two trap regions. At least some fingers each comprise one barrier portion (), two trap portions () and one track portion (), wherein the barrier portion is associated with the barrier region closest to the busbar assigned to the finger, the trap portions are each associated with one of the trap regions and the track portion is associated with the track region. The fingers are configured such that the velocity of a main mode of surface acoustic waves is smaller in the trap regions than in the track region. Each electrode comprises a plurality of stub fingers () being shorter than the fingers. Each stub finger is associated only with the barrier region closest to the busbar assigned to the stub finger. The electrodes are configured such that a velocity of the main mode in the barrier regions is greater than in the track region.