公开(公告)号：US12073048B2

公开(公告)日：2024-08-27

申请号：US17693644

申请日：2022-03-14

Applicant: Analog Devices, Inc.

Inventor： Atulya Yellepeddi ,  Harshvardhan Bhatia ,  Jiayi Jiang ,  Reuben Harry Cohn-Gordon ,  Johannes Traa ,  Sai Kulkarni

IPC: G06F3/044

CPC classification number: G06F3/0443 ,  G06F2203/04101 ,  G06F2203/04104

Abstract: A device for proximity detection includes multiple electrodes and an impedance sensor coupled to the electrodes. The impedance sensor may include three impedance elements and a sensing element arranged in a bridge configuration to offset an external impedance and detect changes to impedance in the environment of the device. The device further includes a proximity detector that obtains sensor measurements between multiple subsets of electrodes and analyzes the sensor measurements to determine whether an object is approaching the device.