The Design and Preparation of X Band Absorbing Insulation Coatings

2014 ◽  
Vol 881-883 ◽  
pp. 1065-1069
Author(s):  
Dong Wei Chen ◽  
Fan Wu ◽  
Xue Hong Yu ◽  
Chang Jun Liao ◽  
Wan Jun Hao ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Fiber ◽  
Thermal Insulation ◽  
Electromagnetic Interference ◽  
New Materials ◽  
Insulating Materials ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Thermal Insulating ◽  
X Band

According to the principle of electromagnetic wave absorption, functionally reforming thermal insulating materials for building, through designing and theoretically simulating of the λ/4 model, using carbon fiber film, the article has successfully prepared insulation coatings for X-band electromagnetic wave absorption. Result shows, with the thickness of 3.0 mm in 8 ~ 12 GHz band, 100% of bandwidth below-10 dB can be reached. New materials can be used such as the surface of the thermal insulation of buildings and X-band electromagnetic interference protection.

The Design and Preparation of Composite Gypsum Boards Absorber Based on Phase Modulation Membrane

2014 ◽  
Vol 881-883 ◽  
pp. 1216-1220
Author(s):  
Ying Ying Yi ◽  
Wan Jun Hao ◽  
Hui Chao Zhao ◽  
Yi Feng Dong ◽  
Fan Wu ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Pollution Control ◽  
Electromagnetic Interference ◽  
Phase Modulation ◽  
Maximum Absorption ◽  
Specimen Thickness ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Thermal Insulating ◽  
Film Specimen

According to the principle of electromagnetic wave absorption, functionally reforming thermal insulating materials for building, through designing and theoretically simulating of the λ/4 model, the article has successfully prepared EPS composite gypsum boards for electromagnetic wave absorption. The result shows that, a maximum absorption of-18.7dB at 3GHz and 85% of bandwidth below-10dB was achieved under following conditions: using 380Ω/□ resistive film, specimen thickness of 1.50cm. However, by using phase modulation membrane (PMM),it achieved a maximum absorption of-20dB and 100% of bandwidth below-10dB. This new composite materials can be used for electromagnetic interference protection for WLAN and indoor electromagnetic radiation pollution control.

scholarly journals Magnetic and Electromagnetic Wave Absorption Characteristics of BaFe11Ti0.5Zn0.5O19 in X Band

2019 ◽  
Vol 553 ◽  
pp. 012001
Author(s):  
Dedi ◽  
Novrita Idayanti ◽  
Tony Kristiantoro ◽  
Nanang Sudrajat ◽  
Arighi Gustinova ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
X Band ◽  
Absorption Characteristics

scholarly journals The electromagnetic absorbers based nano - structured granular polymer-composites at gigahertz frequencies.

2021 ◽  
Vol 2086 (1) ◽  
pp. 012064
Author(s):  
D Savelev ◽  
E Grushevski ◽  
N Savinski ◽  
M Soloviev ◽  
V Turov ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Polymer Composites ◽  
Electromagnetic Interference ◽  
Electromagnetic Wave Absorption ◽  
Broad Bandwidth ◽  
Wave Absorption ◽  
Absorbing Materials ◽  
Absorption Performance ◽  
Electromagnetic Absorbers

Abstract The rapid increase in electromagnetic interference has received a serious attention from researchers who responded by producing a variety of radar absorbing materials especially at high gigahertz frequencies. Ongoing investigation is being carried out in order to find the best absorbing materials which can fulfill the requirements for smart absorbing materials which are lightweight, broad bandwidth absorption, stronger absorption etc. Therefore, this article introduces the electromagnetic wave absorption mechanisms and then reveals and reviews those parameters that enhance the absorption performance.

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