公开(公告)号：US09628199B1

公开(公告)日：2017-04-18

申请号：US15004199

申请日：2016-01-22

Applicant: Amazon Technologies, Inc.

Inventor： Mudit Sunilkumar Khasgiwala ,  Akshay Mohan ,  Jagan Vaidyanathan Rajagopalan ,  Duck Ho Bae

IPC: H04B1/10 ,  H04B15/00 ,  H04B15/02 ,  H04B1/00 ,  H04B1/401

CPC classification number: H04B15/02

Abstract: A processing device detects an occurrence of the first set of use conditions associated with a power supply line coupled between a power source and a power sink in a user device. The processing device sets a tunable decoupling capacitor on the power supply line to a first capacitance value to reduce a level of electromagnetic interference on the power supply line at a first frequency corresponding to the first capacitance value. When the processing device detects a change from the first set of use conditions associated with the power supply line to a second set of use conditions, the processing device sets the tunable decoupling capacitor to a second capacitance value to reduce a level of electromagnetic interference on the power supply line at a second frequency corresponding to the second capacitance value.