Microwave absorption properties of double-layer absorber based on carbonyl iron/barium hexaferrite composites

2016 ◽  
Vol 122 (5) ◽  
Author(s):  
Xiaohu Ren ◽  
Huiqing Fan ◽  
Yankui Cheng
Keyword(s):  
Microwave Absorption ◽  
Double Layer ◽  
Carbonyl Iron ◽  
Barium Hexaferrite ◽  
Absorption Properties ◽  
Microwave Absorption Properties

scholarly journals Microwave Absorption Properties of Double-Layer RADAR Absorbing Materials Based on Doped Barium Hexaferrite/TiO2/Conducting Carbon Black

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Sukanta Das ◽  
G. C. Nayak ◽  
S. K. Sahu ◽  
P. C. Routray ◽  
A. K. Roy ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Carbon Black ◽  
Microwave Absorption ◽  
Double Layer ◽  
Reflection Loss ◽  
Barium Hexaferrite ◽  
Conducting Layer ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorbing Materials

In this report, we demonstrate microwave absorption properties of barium hexaferrite, doped barium hexaferrite, titanium dioxide and conducting carbon black based RADAR absorbing material for stealth application. Double-layer absorbers are prepared with a top layer consisting of 30% hexaferrite and 10% titanium dioxide while the bottom layer composed of 30% hexaferrite and 10% conducting carbon black, embedded in chloroprene matrix. The top and bottom layers are prepared as impedance matching layer and conducting layer, respectively, with a total thickness of 2 mm. Microwave absorption properties of all the composites were analyzed in X-band region. Maximum reflection loss of −32 dB at 10.64 GHz was observed for barium hexaferrite based double-layer absorber whereas for doped barium hexaferrite based absorber the reflection loss was found to be −29.56 dB at 11.7 GHz. A consistence reflection loss value (>−24 dB) was observed for doped barium hexaferrite based RADAR absorbing materials within the entire bandwidth.

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