公开(公告)号：US11696078B2

公开(公告)日：2023-07-04

申请号：US17879454

申请日：2022-08-02

Applicant: QUALCOMM Technologies, Inc.

Inventor： Craig Core ,  Hamid Basaeri ,  Robert Littrell

IPC: H04R19/00 ,  H04R19/04 ,  B81B3/00 ,  B81C1/00 ,  H04R31/00 ,  H04R1/04 ,  H04R7/06

CPC classification number: H04R19/04 ,  B81B3/0021 ,  B81C1/00158 ,  H04R1/04 ,  H04R7/06 ,  H04R19/005 ,  H04R31/003 ,  B81B2201/0257 ,  B81B2203/019 ,  B81B2203/0127 ,  B81B2203/0315 ,  B81B2207/012 ,  B81C2201/013 ,  H04R2201/003

Abstract: A robust MEMS transducer includes a kinetic energy diverter disposed within its frontside cavity. The kinetic energy diverter blunts or diverts kinetic energy in a mass of air moving through the frontside cavity, before that kinetic energy reaches a diaphragm of the MEMS transducer. The kinetic energy diverter renders the MEMS transducer more robust and resistant to damage from such a moving mass of air.

公开(公告)号：US11800299B2

公开(公告)日：2023-10-24

申请号：US17747454

申请日：2022-05-18

Applicant: Qualcomm Technologies Inc.

Inventor： Robert Littrell ,  Ronald Gagnon

IPC: H04R3/00 ,  H04R19/04 ,  H04R17/02 ,  H04R1/04 ,  H04R19/00

CPC classification number: H04R19/04 ,  H04R1/04 ,  H04R3/00 ,  H04R17/02 ,  H04R19/005 ,  H04R2201/003

Abstract: A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.