Critical analysis of periodic fractal frequency selective surfacescoupled with synthesised ferrite‐based dielectric substrates for optimal radarwave absorption

It is a very challenging task to develop a good radar wave absorber with wide bandwidth that corresponds to reflection loss (RL) ≤ − 10 dB and lower coating thickness using radar absorbing material alone. However, this goal can be achieved with the application of advanced electromagnetic (EM) structures such as fractal frequency selective surfaces (FFSSs). The prior knowledge of the suitability of an FFSS for a particular nanocomposite material based on its dielectric constant (ɛ′) is a very crucial factor. Therefore, a critical analysis has been carried out to choose the suitable FFSS geometries for a given set of nanocomposite materials having a ɛ′ ranging in between 1 and 20. The higher iterated Minkowski loop FFSS-impacted nanocomposite has been chosen for the experimental validation based on its good radar wave absorption capability. The Minkowski loop FFSS-impacted radar absorbing coating (RAC) has been fabricated, and its performance evaluation has been carried out. The measured RL of −17.9 dB at 10.8 GHz with a wide bandwidth of 2.9 GHz (RL≤−10 dB) has been noticed for 2.2 mm thick RAC. The findings provide an effective way to develop thin and broadband absorber for various practical EM applications.

[1]  Paulo Henrique da Fonseca Silva,et al.  Stable and compact multiband frequency selective surfaces with Peano pre-fractal configurations , 2013 .

[2]  Ravi Panwar,et al.  Design of Ferrite–Graphene-Based Thin Broadband Radar Wave Absorber for Stealth Application , 2015, IEEE Transactions on Magnetics.

[3]  Fan Zhang,et al.  Fe3O4/TiO2 Core/Shell Nanotubes: Synthesis and Magnetic and Electromagnetic Wave Absorption Characteristics , 2010 .

[4]  Zhirun Hu,et al.  Wideband Multilayer Sierpinski Carpet Array Radar Absorber , 2016 .

[5]  K. Hu,et al.  Synthesis, characterization and microwave absorption properties of titania-coated barium ferrite composites , 2006 .

[6]  Jung-Ryul Lee,et al.  Progress in frequency selective surface-based smart electromagnetic structures: A critical review , 2017 .

[7]  T. C. Shami,et al.  Microwave absorption study of carbon nano tubes dispersed hard/soft ferrite nanocomposite , 2012 .

[8]  R. Panwar,et al.  Experimental Demonstration of Novel Hybrid Microwave Absorbing Coatings Using Particle-Size-Controlled Hard–Soft Ferrite , 2018, IEEE Transactions on Magnetics.

[9]  V. Varadan,et al.  IMPACT OF FRACTAL DIMENSION IN THE DESIGN OF MULTI-RESONANT FRACTAL ANTENNAS , 2004 .

[10]  Z. Xue,et al.  Multiband polarisation insensitive metamaterial absorber based on circular fractal structure , 2016 .

[11]  Jung-Ryul Lee,et al.  Performance and non-destructive evaluation methods of airborne radome and stealth structures , 2018 .

[12]  Lei Zhou,et al.  Theoretical Studies on the Transmission and Reflection Properties of Metallic Planar Fractals , 2004 .

[13]  L. Deng,et al.  A Broadband Radar Absorber Based on Perforated Magnetic Polymer Composites Embedded With FSS , 2014, IEEE Transactions on Magnetics.

[14]  Haoliang Xue,et al.  Preparation of core-shell Zn-doped CoFe2O4 cubes @CNT composites and their absorbing performances , 2017 .

[15]  Ravi Panwar,et al.  An efficient use of waste material for development of cost-effective broadband radar wave absorber , 2015 .

[16]  Xian Wang,et al.  Absorption enhancement of fractal frequency selective surface absorbers by using microwave absorbing material based substrates , 2011 .

[17]  Dharmendra Singh,et al.  Double layer microwave absorber based on Cu dispersed SiC composites , 2018, Advanced Powder Technology.

[18]  C. Brosseau,et al.  Dielectric response of perforated two-dimensional lossy heterostructures: A finite-element approach , 2006 .

[19]  Smitha Puthucheri,et al.  Thin and Broadband Two-Layer Microwave Absorber in 4–12 GHz with Developed Flaky Cobalt Material , 2018, Electronic Materials Letters.

[20]  G. C. Nayak,et al.  Microwave absorption properties of double-layer composites using CoZn/NiZn/MnZn-ferrite and titanium dioxide , 2015 .

[21]  C. Brosseau,et al.  Reflectance and absorbance of all-dielectric metamaterial composites with fractal boundaries : A numerical investigation , 2009 .

[22]  Xuan Xiong,et al.  Enhancing and broadening absorption properties of frequency selective surfaces absorbers using FeCoB-based thin film , 2012 .

[23]  Smitha Puthucheri,et al.  Development of Analytical Approach to Fabricate Composites for Microwave Absorption , 2017, IEEE transactions on magnetics.

[24]  Faxiang Qin,et al.  A review and analysis of microwave absorption in polymer composites filled with carbonaceous particles , 2012 .

[25]  A. Maalouf,et al.  Moore's curve structuring of ferromagnetic composite PE-NiFe absorbers , 2018 .

[26]  R. Panwar,et al.  Development of thin broad band radar absorbing materials using nanostructured spinel ferrites , 2016, Journal of Materials Science: Materials in Electronics.

[27]  Mohd Najim,et al.  ANN-Based Two-Layer Absorber Design Using Fe–Al Hybrid Nano-Composites for Broad Bandwidth Microwave Absorption , 2016, IEEE Transactions on Magnetics.