Electro-magnetic Shielding Technologies in Hospital

2012 ◽  
Author(s):  
Tohru Iwai ◽  
Shinichiro Yamamoto ◽  
Satoru Aikawa ◽  
Kenichi Hatakeyama
Keyword(s):  
Magnetic Shielding ◽  
Electro Magnetic

217 Electro magnetic shielding Effectiveness of Ferrite Coatied Carbon Fiber Sheets by Micro Wave-Hydro Thermal Method

2000 ◽  
Vol 005.2 (0) ◽  
pp. 65-66
Author(s):  
Hidetoshi YAMAMOTO ◽  
Riichi MURAKAMI ◽  
Daisuke YONEKURA ◽  
Yoshinori HAMA ◽  
Jin HO Lee ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Magnetic Shielding ◽  
Thermal Method ◽  
Shielding Effectiveness ◽  
Electro Magnetic

scholarly journals Plating for Electro-magnetic Shielding

2017 ◽  
Vol 68 (4) ◽  
pp. 191-195
Author(s):  
Atsushi SUGIYAMA ◽  
Masahiro YOSHINO
Keyword(s):  
Magnetic Shielding ◽  
Electro Magnetic

Electro/magnetic shielding effectiveness of soft magnetic Fe80Nb6B14 amorphous alloy

2009 ◽  
Vol 209 (5) ◽  
pp. 2356-2360 ◽  
Author(s):  
G. Haneczok ◽  
R. Wroczyński ◽  
P. Kwapuliński ◽  
A. Chrobak ◽  
Z. Stokłosa ◽  
...  
Keyword(s):  
Amorphous Alloy ◽  
Magnetic Shielding ◽  
Shielding Effectiveness ◽  
Soft Magnetic ◽  
Electro Magnetic

scholarly journals Validation of a measurement method for magnetic shielding effectiveness of a wire mesh enclosure with comparison to an analytical model

2013 ◽  
Vol 11 ◽  
pp. 189-195 ◽  
Author(s):  
M. Kühn ◽  
W. John ◽  
R. Weigel
Keyword(s):  
Magnetic Field ◽  
Analytical Model ◽  
Helmholtz Coil ◽  
Wire Mesh ◽  
Magnetic Shielding ◽  
Shielding Effectiveness ◽  
Electro Magnetic Field ◽  
Signal Amplifier ◽  
Electro Magnetic ◽  
The Magnetic Field

Abstract. This paper deals with the validation of a measurement method for determining the magnetic shielding effectiveness of a wire mesh enclosure in the frequency range from 10 kHz to 150 kHz. The comparison with an analytical model (parallel-plate-shield, see Kaden, 1959) for magnetic shielding effectiveness of wire mesh is also part of this contribution. To measure the shielding effectiveness of an enclosure in general, two steps are necessary: 1. Reference measurement of the incident electro-magnetic field. 2. Measurement of the incident electro-magnetic field in the enclosure by same conditions. This method presented in the contribution uses a Helmholtz coil as magnetic field source, controlled by a signal generator and an amplifier in voltage mode. At first, a field meter was used to measure the frequency dependent magnetic field in the center of the Helmholtz coil. The magnetic field strength was also analytically calculated and compared to the measurement results. The next step was to measure the induction voltage caused by the magnetic field with a magnetic field probe, which was later used for the measurements of the shielding effectiveness either. A signal amplifier was needed to raise the signal-to-noise-ratio (SNR). The gain of the signal amplifier was also determined and measured. Two positions of the enclosure in the Helmholtz coil were considered, horizontal and vertical. The vertical position of the enclosure approaches the analytical model of Kaden (1959) closely and the results show a good match with the analytical model.

scholarly journals Study on Material of Polymer-based Electromagnetic Shielding Composites

2018 ◽  
Vol 1 (1) ◽  
pp. 28 ◽  
Author(s):  
Hanwen Zhang ◽  
Zhendong Qiu ◽  
Huiping Wang
Keyword(s):  
Electromagnetic Interference ◽  
Evaluation Method ◽  
Electromagnetic Shielding ◽  
Shielding Effect ◽  
Magnetic Shielding ◽  
Information Industry ◽  
New Type ◽  
Performance Evaluation Method ◽  
Electro Magnetic ◽  
Shielding Composites

With the extensive application of electromagnetic resources in the information industry, electromagnetic interference has caused many hazards. Polymer-based electromagnetic shielding composite material as a new type of material has good shielding effect on the electromagnetic wave. This paper mainly introduces the types of polymer-based electro-magnetic shielding composite materials and the performance evaluation method of shielding materials.

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