Noise Coupling Path Analysis for RF Interference Caused by LCD Noise Modulation

被引:0
作者
Hwang, Chulsoon [1 ]
Kong, Sunkyu [2 ]
Enomoto, Takashi [3 ]
Maeshima, Junji [3 ]
Araki, Kenji [3 ]
Pommerenke, David [1 ]
Fan, Jun [1 ]
机构
[1] Missouri Univ Sci & Technol, EMC Lab, 4000 Enterprise Dr, Rolla, MO 65401 USA
[2] Korea Adv Inst Sci & Technol, Elect Engn, 291 Daehak Ro, Daejeon 305701, South Korea
[3] Sony EMCS Corp, Minato Ku, 1-7-1 Konan, Tokyo 1080075, Japan
来源
2016 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC) | 2016年
基金
美国国家科学基金会;
关键词
RF interference; RFI; LCD; modulation; noise coupling; mobile plume;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
RE interference caused by liquid crystal display (LCD) noise modulation in a mobile phone was investigated and its noise coupling path was demonstrated. In the frequency division duplex communications, mobile phones can send (uplink) and receive (downlink) at the same time. When an antenna transmits high power signal, the baseband noise from an LCD panel is modulated into an RF band and causes interference in a receiving antenna. A noise coupling path between an antenna and a display driver IC, which drives the LCD panel, was experimentally demonstrate. In addition, a simple noise source model was proposed to represent modulation mechanism. A network analysis with the modulation model showed good correlation with the measured spectra of the modulated noise in a receiving antenna.
引用
收藏
页码:348 / 352
页数:5
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