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

  • Satyajeet Shinde
  • , Andriy Radchenko
  • , Jingnan Pan
  • , Kang Sung-Hee
  • , Dongjin Kim
  • , Sangyeob Lee
  • , Jun Fan
  • , David Pommerenke
  • Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

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.

Keywords

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

Disciplines

  • Electromagnetics and Photonics

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