公开(公告)号：US20230171549A1

公开(公告)日：2023-06-01

申请号：US18059886

申请日：2022-11-29

Applicant: QUALCOMM Technologies, Inc.

Inventor： Michael CARFORE

IPC: H04R17/00 ,  B81B3/00

CPC classification number: H04R17/00 ,  B81B3/0051 ,  H04R2201/003 ,  B81B2201/0257

Abstract: Aspects of transducers with feedback transduction are described. One aspect is a transducer system comprising an operational amplifier having an inverting input, a non-inverting input, and an output. The transducer system also includes a piezoelectric microelectromechanical system (MEMS) transducer having a first node and a second node, wherein the first node is coupled to the inverting input of the operational amplifier, and wherein the piezoelectric MEMS transducer is configured to generate an electrical signal across the first node and the second node in response to a signal incident upon the piezoelectric MEMS transducer. The transducer system also includes an attenuator having an input and an output, wherein the input of the attenuator is coupled to the output of the operational amplifier, and wherein the output of the attenuator is coupled to the second node of the piezoelectric MEMS transducer.