Presentation 2000/4/18
A RADIATION NOISE REDUCTION TECHNIQUE IN SMALL SIZE NOTEBOOK COMPUTER SYSTEMS
Tsutomu Hara, Mariko Kasai, Hitoshi Yokota, Takashi Maruyama, Hideki Itokawa,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Small size Note-type PC becomes a major Product in PC products today. Bacause of its size and thickness, the Battery-pack of Note-type PC is usually a columnar shape and located on the back of the Note-type PC. In the battery-pack, wirings to positive and negative poles are branched at the center of the buttery, then they form a strong radiation source as a dipole antenna. As a countermeasure against that radiation mechanism, a means of connecting each electrode to ground at a high frequency was provided. The effect was over 15dB for reducing radiated noise.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Printed Circuit Board / Note Type PC / Battery / Radiation Noise
Paper # EMCJ2000-2
Date of Issue

Conference Information
Committee EMCJ
Conference Date 2000/4/18(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To Electromagnetic Compatibility (EMCJ)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A RADIATION NOISE REDUCTION TECHNIQUE IN SMALL SIZE NOTEBOOK COMPUTER SYSTEMS
Sub Title (in English)
Keyword(1) Printed Circuit Board
Keyword(2) Note Type PC
Keyword(3) Battery
Keyword(4) Radiation Noise
1st Author's Name Tsutomu Hara
1st Author's Affiliation Systems Development Laboratory, Hitachi, Ltd.()
2nd Author's Name Mariko Kasai
2nd Author's Affiliation Systems Development Laboratory, Hitachi, Ltd.
3rd Author's Name Hitoshi Yokota
3rd Author's Affiliation PC Division, Hitachi, Ltd.
4th Author's Name Takashi Maruyama
4th Author's Affiliation PC Division, Hitachi, Ltd.
5th Author's Name Hideki Itokawa
5th Author's Affiliation PC Division, Hitachi, Ltd.
Date 2000/4/18
Paper # EMCJ2000-2
Volume (vol) vol.100
Number (no) 8
Page pp.pp.-
#Pages 6
Date of Issue