Investigation of Interference in a Mobile Phone from a DC-to-DC Converter

Abstract

Turning on the LCD screen of a mobile phone causes desensitization of its receiver in the GSM lower frequency band (900 MHz). In this paper, the measurement techniques used for the investigation of intra-system interference in a mobile phone caused due to the DC-DC converters present on-chip the LCD driver IC are presented. An equivalent noise source model is created by modelling the flexible printed circuit board traces and obtaining a Thevenin equivalent noise by changing the load conditions.

Meeting Name

2013 IEEE International Symposium on Electromagnetic Compatibility (2013: Aug. 5-9, Denver, CO)

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

DC-to-DC Converters; Flexible Printed Circuit Boards; LCD Drivers; Load Condition; Lower Frequencies; Measurement Techniques; Noise Source Models; Thevenin Equivalent; DC-DC Converters; Electromagnetic Compatibility; Frequency Bands; Liquid Crystal Displays; Mobile Phones; Cellular Telephones

International Standard Book Number (ISBN)

978-1-4799-0408-2

International Standard Serial Number (ISSN)

2158-110X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2013

Link to Full Text

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