Modeling and Estimation of LCD Noise Modulation for Radio Frequency Interference

Chulsoon Hwang; David Pommerenke; Jun Fan; Takashi Enomoto; Junji Maeshima; Kenji Araki

doi:10.1109/TEMC.2017.2705178

Modeling and Estimation of LCD Noise Modulation for Radio Frequency Interference

Chulsoon Hwang
, David Pommerenke
, Jun Fan
, Takashi Enomoto
, Junji Maeshima
, Kenji Araki

Electrical and Computer Engineering

Missouri University of Science and Technology

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

Abstract

A liquid crystal display baseband noise, whose spectrum is much lower than RF bands, is modulated with the carrier signal of cellular communication and interferes with an Rx receiver resulting in a desensitization problem. The modulation phenomenon is modeled with impedance parameters and a modulation coefficient. The coupled noise on the embedded cellular antenna is experimentally validated in both small- and large-frequency offset cases. In addition, to estimate the modulated noise coupling to the antenna earlier in the development process, a numerical simulation method considering the impedance of display drive IC is proposed successfully validated.

Original language	American English
Article number	7934080
Pages (from-to)	1685-1692
Number of pages	8
Journal	IEEE Transactions on Electromagnetic Compatibility
Volume	59
Issue number	6
DOIs	https://doi.org/10.1109/TEMC.2017.2705178
State	Published - Dec 1 2017

Keywords

Liquid Crystal Display (LCD)
Mobile Phone
Modulation
Noise Coupling
Radio Frequency (RF) Interference

Disciplines

Electrical and Computer Engineering

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10.1109/TEMC.2017.2705178License: CC BY

https://doi.org/10.1109/TEMC.2017.2705178

Cite this

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title = "Modeling and Estimation of LCD Noise Modulation for Radio Frequency Interference",

abstract = " A liquid crystal display baseband noise, whose spectrum is much lower than RF bands, is modulated with the carrier signal of cellular communication and interferes with an Rx receiver resulting in a desensitization problem. The modulation phenomenon is modeled with impedance parameters and a modulation coefficient. The coupled noise on the embedded cellular antenna is experimentally validated in both small- and large-frequency offset cases. In addition, to estimate the modulated noise coupling to the antenna earlier in the development process, a numerical simulation method considering the impedance of display drive IC is proposed successfully validated.",

keywords = "Liquid Crystal Display (LCD), Mobile Phone, Modulation, Noise Coupling, Radio Frequency (RF) Interference",

author = "Chulsoon Hwang and David Pommerenke and Jun Fan and Takashi Enomoto and Junji Maeshima and Kenji Araki",

note = "Publisher Copyright: {\textcopyright} 1964-2012 IEEE.",

year = "2017",

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day = "1",

doi = "10.1109/TEMC.2017.2705178",

language = "American English",

volume = "59",

pages = "1685--1692",

journal = "IEEE Transactions on Electromagnetic Compatibility",

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T1 - Modeling and Estimation of LCD Noise Modulation for Radio Frequency Interference

AU - Hwang, Chulsoon

AU - Pommerenke, David

AU - Fan, Jun

AU - Enomoto, Takashi

AU - Maeshima, Junji

AU - Araki, Kenji

PY - 2017/12/1

Y1 - 2017/12/1

N2 - A liquid crystal display baseband noise, whose spectrum is much lower than RF bands, is modulated with the carrier signal of cellular communication and interferes with an Rx receiver resulting in a desensitization problem. The modulation phenomenon is modeled with impedance parameters and a modulation coefficient. The coupled noise on the embedded cellular antenna is experimentally validated in both small- and large-frequency offset cases. In addition, to estimate the modulated noise coupling to the antenna earlier in the development process, a numerical simulation method considering the impedance of display drive IC is proposed successfully validated.

AB - A liquid crystal display baseband noise, whose spectrum is much lower than RF bands, is modulated with the carrier signal of cellular communication and interferes with an Rx receiver resulting in a desensitization problem. The modulation phenomenon is modeled with impedance parameters and a modulation coefficient. The coupled noise on the embedded cellular antenna is experimentally validated in both small- and large-frequency offset cases. In addition, to estimate the modulated noise coupling to the antenna earlier in the development process, a numerical simulation method considering the impedance of display drive IC is proposed successfully validated.

KW - Liquid Crystal Display (LCD)

KW - Mobile Phone

KW - Modulation

KW - Noise Coupling

KW - Radio Frequency (RF) Interference

UR - https://scholarsmine.mst.edu/ele_comeng_facwork/2356

UR - https://doi.org/10.1109/TEMC.2017.2705178

U2 - 10.1109/TEMC.2017.2705178

DO - 10.1109/TEMC.2017.2705178

M3 - Article

SN - 1558-187X

VL - 59

SP - 1685

EP - 1692

JO - IEEE Transactions on Electromagnetic Compatibility

JF - IEEE Transactions on Electromagnetic Compatibility

IS - 6

M1 - 7934080

ER -

Modeling and Estimation of LCD Noise Modulation for Radio Frequency Interference

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