公开(公告)号：US10732764B1

公开(公告)日：2020-08-04

申请号：US16122118

申请日：2018-09-05

Applicant: Amazon Technologies, Inc.

Inventor： Balamurugan Shanmugam ,  Sandeep Vuppu

IPC: G06F3/041 ,  G06F3/044

Abstract: A device includes a substrate and a touch control interface including touch control electrodes laminated onto the substrate and a touch controller electrically connected to each touch control electrode. The touch controller is configured to detect a change in a capacitance of a first touch control electrode to determine that a user is touching the first touch control electrode. The device may include a high-pass filter connected to the first touch control electrode and an impedance matching network electrically connected to the high-pass filter. The device includes a radio controller connected to the impedance matching network. The radio controller is configured to use the first touch control electrode as a first antenna to transmit and receive wireless signals. The optional impedance matching network may be configured to match an input impedance of the first touch control electrode to an output impedance of the radio controller.