A study for grounding effect to improve performance of WWAN

Author

Yoon, Sang-Rock ; Lee, Sung-Kyu ; Lee, Ki-Seob ; Choi, On-Sik ; Kim, Nam-deog ; Kim, Ki-Chai ; Park, Yong-Wan

Author_Institution

SAMSUNG Electron. Co. LLC, Yongin

fYear

2008

fDate

18-22 Aug. 2008

Firstpage

1

Lastpage

4

Abstract

Electromagnetic interference (EMI) from a LCD panel deteriorates the performance of wireless network system (with wireless network cards: Wireless Wide Area Network (WWAN) card) in a notebook. One of the main EMI noise factor, for the wireless network system, is the grounding effect of the antenna in the system. In this paper, the approach to solve the EMI noise of the system is introduced; by using the grounding methods of the system. In order to measure the EMI noise of the WWAN itself, the standard JIG system is developed. Most grounding effects are confirmed experimentally. Because the EMI noise of the WWAN system is difficult to reduce, it is important to know the antenna (with the coaxial cable) itself.

Keywords

electromagnetic interference; liquid crystal displays; notebook computers; radio networks; wide area networks; EMI noise factor; LCD panel; WWAN; electromagnetic interference; grounding effect; wireless network system; wireless wide area network; Antenna measurements; Coaxial cables; Electromagnetic interference; Grounding; Measurement standards; Noise measurement; Noise reduction; Standards development; Wide area networks; Wireless networks; Antennas; Balun; Electromagnetic interference; Grounding; LCD; Wireless Wide Area Network (WWAN);

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2008. EMC 2008. IEEE International Symposium on

Conference_Location

Detroit, MI

Print_ISBN

978-1-4244-1699-8

Electronic_ISBN

978-1-4244-1698-1

Type

conf

DOI

10.1109/ISEMC.2008.4652071

Filename

4652071