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:
Apr. 07, 2026
Filed:
Dec. 27, 2023
Rf360 Singapore Pte. Ltd, Singapore, SG;
Marc Esquius Morote, Munich, DE;
RF360 Singapore Pte. Ltd., Singapore, SG;
Abstract
In an acoustic mirror of a bulk-acoustic wave (BAW) device, acoustic energy is reflected at interfaces of layers having different acoustic impedances, and the wavelengths of the acoustic energy reflected at each layer depends on the layer thickness. The acoustic mirror comprises a patterned layer including a first region of a first material and a second region of the first material separated by a second material to reduce an effective thickness of the layer for acoustic reflection. As operating frequencies in wireless devices increase, current manufacturing practices may be unable to produce the correspondingly thinner layers of the acoustic mirror. Thus, the BAW device described herein can be employed to provide a reduced effective thickness for acoustic reflection with layers having an actual thickness that can be formed by existing manufacturing practices. In some examples, the first material and the second material have different acoustic impedances.