Patent · US Active

Impedance matching device, transducer device and method of manufacturing an impedance matching device

US11812238B2 · kind B2 · utility

0Cited by

6References

45Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Severin Schweiger · Dresden, DE
Sandro Koch · Dresden, DE
Mario Grafe · Dresden, DE
Nicolas Lange · Feldafing, DE
Joerg Amelung · Dresden, DE

Key dates

Filing date	Nov 3, 2020
Grant date	Nov 7, 2023
Priority date	—
Expiry date	Mar 22, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG10K11/02
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An impedance matching device for matching a characteristic acoustic impedance includes an impedance matching body including a first side and an opposite second side. The impedance matching device is configured to match a characteristic acoustic impedance of a medium contacted on the first side to a characteristic acoustic impedance of a sound transducer contacted on the second side. The impedance matching body includes microstructures which have a structural extent of at most 500 nanometers along at least one spatial direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.