An Ultra‐Broadband Metamaterial Absorber with High Absorption Rate Throughout the X‐Band

2019 ◽  
Vol 256 (11) ◽  
pp. 1900069 ◽  
Author(s):  
Shijun Ji ◽  
Chengxin Jiang ◽  
Ji Zhao ◽  
Jili Wang ◽  
Handa Dai
Keyword(s):  
Absorption Rate ◽  
Metamaterial Absorber ◽  
X Band ◽  
High Absorption

scholarly journals An Ultra‐Broadband Metamaterial Absorber with High Absorption Rate Throughout the X‐Band (Phys. Status Solidi B 11/2019)

2019 ◽  
Vol 256 (11) ◽  
pp. 1970042
Author(s):  
Shijun Ji ◽  
Chengxin Jiang ◽  
Ji Zhao ◽  
Jili Wang ◽  
Handa Dai
Keyword(s):  
Absorption Rate ◽  
Metamaterial Absorber ◽  
X Band ◽  
High Absorption

scholarly journals On The Study of Development of X Band Metamaterial Radar Absorber

2012 ◽  
Vol 1 (3) ◽  
pp. 94 ◽  
Author(s):  
M. A. Abdalla ◽  
Z. Hu
Keyword(s):  
Metamaterial Absorber ◽  
Theoretical Concepts ◽  
Centre Frequency ◽  
High Impedance ◽  
Full Wave ◽  
X Band ◽  
New Development ◽  
Simulation Results ◽  
Absorption Level ◽  
High Absorption

A new development of metamaterial applications in radar absorbers for X band is introduced. Two modifications were suggested based on two different approaches which are a new called fan shaped resonator absorber and a modified high impedance metamaterial absorber. Both approaches introduce thin radar absorber (5.3% at centre frequency) with wide bandwidth and high absorption level. The theoretical concepts of each design are explained and validated using full wave simulation. Results illustrate that the new development can achieve wider bandwidth, multiple operating bands; the increase in bandwidth is up to 8 times the conventional one. Moreover, the reported absorbers have capability to operate with different polarizations.

Comments on “A set square design metamaterial absorber for X band applications”

2021 ◽  
pp. 1-5
Author(s):  
Saeed Ur Rahman ◽  
Habib Ullah ◽  
Qunsheng Cao ◽  
Muhammad Kabir Khan ◽  
Naveed Ullah
Keyword(s):  
Metamaterial Absorber ◽  
X Band

scholarly journals Dual functionality metamaterial enables ultra-compact, highly sensitive uncooled infrared sensor

Nanophotonics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 1337-1346
Author(s):  
Jin Tao ◽  
Zhongzhu Liang ◽  
Guang Zeng ◽  
Dejia Meng ◽  
David R. Smith ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Metamaterial Absorber ◽  
Bulk Acoustic Wave ◽  
Infrared Sensors ◽  
Bulk Acoustic Wave Resonator ◽  
Wave Resonator ◽  
Highly Sensitive ◽  
Film Bulk ◽  
Perfect Metamaterial Absorber ◽  
High Absorption

Abstract Cointegration and coupling a perfect metamaterial absorber (PMA) together with a film bulk acoustic wave resonator (FBAR) in a monolithic fashion is introduced for the purpose of producing ultracompact uncooled infrared sensors of high sensitivity. An optimized ultrathin multilayer stack was implemented to realize the proposed device. It is experimentally demonstrated that the resonance frequency of the FBAR can be used efficiently as a sensor output as it downshifts linearly with the intensity of the incident infrared irradiation. The resulting sensor also achieves a high absorption of 88% for an infrared spectrum centered at a wavelength of 8.2 μm. The structure is compact and can be easily integrated on a CMOS-compatible chip since both the FBAR and PMA utilize and share the same stack of metal and dielectric layers.

A frequency and bandwidth tunable metamaterial absorber in x-band

2015 ◽  
Vol 117 (17) ◽  
pp. 173103 ◽  
Author(s):  
H. Yuan ◽  
B. O. Zhu ◽  
Y. Feng
Keyword(s):  
Metamaterial Absorber ◽  
X Band ◽  
Tunable Metamaterial

The Influence of Different Hydrophobic Agent on the Water Absorptivity of Foam Concrete

2014 ◽  
Vol 665 ◽  
pp. 192-195 ◽  
Author(s):  
Yu Zheng ◽  
Chang Sheng Pan ◽  
Jian Li ◽  
He Chi Pan ◽  
Jun Yi Hu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Water Absorption ◽  
Thermal Performance ◽  
Absorption Rate ◽  
Foam Concrete ◽  
Organic Silicon ◽  
Water Absorption Rate ◽  
Hydrophobic Agent ◽  
High Absorption ◽  
High Fatty Acids

Foam concrete products had high absorption rate due to a large number of bubbles dispersion in it.which has serious effects upon the overall thermal performance of material and the durability of construction.Three methods were studied which includes Organic Silicon hydrophobic agent、High fatty acids hydrophobic agent and hydrophobic agent F in order to reduce the water absorption rate.Results show that the water absorption rate was reduced significantly with mixed High fatty acids. The water absorption rate drops of 68.2%, and the organic silicon is in a second place , and the hydrophobic agent F is the worst.

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