Physics-Based Dipole Moment Source Reconstruction for RFI on a Practical Cellphone

Abstract

A physics-based dipole moment source reconstruction is proposed to estimate the near-field coupling between a liquid crystal display panel to a cellphone's cellular antenna. Based on the understanding of the current distribution on the source, a magnetic dipole moment source is reconstructed to replace the real radiation source that is located at the edge of the flexible printed circuit board. To characterize the coupling from the equivalent dipole moment source to the victim antenna, the noise transfer coefficient is proposed. The noise transfer coefficient can be calculated from the near-field scanning and the direct coupling measurements using a wideband source. The proposed physics-based dipole moment source reconstruction and noise transfer coefficient are successfully validated through the measured near-field coupling in a practical cellphone.

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Comments

This work was supported by the National Science Foundation under Grant IIP-1440110.

Keywords and Phrases

Dipole Moment Model; Display Serial Interface (DSI); Flexible Printed Circuit Board (FPCB); Liquid Crystal Display (LCD); Mobile Industry Processor Interface (MIPI); Mobile Phone; Radio Frequency Interference (RFI)

International Standard Serial Number (ISSN)

0018-9375

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2017

Link to Full Text

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