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

^*Corresponding author for this work

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	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
Publication status	Published - 1 Dec 2017
Externally published	Yes

Keywords

Liquid crystal display (LCD)
mobile phone
modulation
noise coupling
radio frequency (RF) interference

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TEMC.2017.2705178

Cite this

@article{338a42eeb6d24d50a3e9cad359671ef4,

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",

year = "2017",

month = dec,

day = "1",

doi = "10.1109/TEMC.2017.2705178",

language = "English",

volume = "59",

pages = "1685--1692",

journal = "IEEE Transactions on Electromagnetic Compatibility",

issn = "0018-9375",

publisher = "Institute of Electrical and Electronics Engineers",

number = "6",

}

TY - JOUR

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 - http://www.scopus.com/inward/record.url?scp=85020089926&partnerID=8YFLogxK

U2 - 10.1109/TEMC.2017.2705178

DO - 10.1109/TEMC.2017.2705178

M3 - Article

AN - SCOPUS:85020089926

SN - 0018-9375

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this