volume | PIER Journals

Abstract

In this paper, a novel ultrathin five-band polarization insensitive Metamaterial Absorber (MA) is proposed. The proposed structure consists of a periodic array of six arrows with two concentric hexagonal rings, having novel hexagonal 2D-bravais lattices on a grounded FR-4 dielectric substrate (ε_r = 4.25, loss-tangent tanδ = 0.02). The simulated result shows five discrete absorption peaks. The near unity absorption occurs at 2.7, 6.9, 7.3, 13.6 and 16.9 GHz with peak absorptivity of 88.99, 94.45, 87.58, 93.06 and 90.42% respectively. The proposed absorber is ultrathin with thickness of 0.056λ₀ corresponding to the highest frequency of absorption. In order to analyze the absorption mechanism of the structure electromagnetic parameters such as effective permittivity (ε_eff) and effective permeability μ_eff) are retrieved and plotted. Wave absorption phenomena are explained by comparative tabulation of real and imaginary parts of electromagnetic parameters. Absorption is further explained by the characteristics impedance and surface current distribution. The structure, being a six-fold symmetric, has been found to be polarization-insensitive under normal incidence. For the oblique incidence of waves, it also achieves high values of absorption for both TE and TM polarizations. The proposed absorber is fabricated, and scattering parameters are measured. Simulated and measured results are in close agreement. Performance of the proposed MA is further investigated by calculating Fractional Bandwidth (FBW). This absorber can find its applications in phase imaging, photo-detector, hyper-spectral imaging, micro-bolometer, spectroscopic detection, surveillance radar and other defence applications.

1. Smith, D. R., W. J. Padilla, D. C. Vier, S. C. Nemat-Nasser, and S. Schultz, "Composite medium with simultaneously negative permeability and permittivity," Physical Review Letters, Vol. 84, No. 18, 4184, May 1, 2000.
doi:10.1103/PhysRevLett.84.4184 Google Scholar

2. Alu, A. and N. Engheta, "Dispersion characteristics of metamaterial cloaking structures," Electromagnetics, Vol. 28, No. 7, 464-475, Sep. 25, 2008.
doi:10.1080/02726340802322502 Google Scholar

3. Zhao, Y. J., B. C. Zhou, Z. K. Zhang, R. Zhang, and B. Y. Li, "A compact tunable metamaterial filter based on split-ring resonators," Optoelectronics Letters, Vol. 13, No. 2, 120-122, Mar. 1, 2017.
doi:10.1007/s11801-017-7008-7 Google Scholar

4. Majid, H. A., M. K. Abd Rahim, and T. Masri, "Microstrip antenna’s gain enhancement using left-handed metamaterial structure," Progress In Electromagnetics Research M, Vol. 8, 235-247, 2009.
doi:10.2528/PIERM09071301 Google Scholar

5. Landy, N. I., S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, "Perfect metamaterial absorber," Physical Review Letters, Vol. 100, No. 20, 207402, May 21, 2008.
doi:10.1103/PhysRevLett.100.207402 Google Scholar

6. Li, M., H.-L. Yang, X.-W. Hou, Y. Tian, and D.-Y. Hou, "Perfect metamaterial absorber with dual bands," Progress In Electromagnetics Research, Vol. 108, 37-49, 2010.
doi:10.2528/PIER10071409 Google Scholar

7. Ramya, S. and I. S. Rao, "Design of polarization-insensitive dual band metamaterial absorber," Progress In Electromagnetics Research M, Vol. 50, 23-31, 2016.
doi:10.2528/PIERM16070501 Google Scholar

8. Kaur, K. P., T. K. Upadhyaya, and M. Palandoken, "Dual-band polarization-insensitive meta-material inspired microwave absorber for LTE-band applications," Progress In Electromagnetics Research C, Vol. 77, 91-100, 2017.
doi:10.2528/PIERC17060502 Google Scholar

9. Khusboo, K., N. Mishra, and R. K. Chaudhary, "Wide-angle polarization independent triple band absorber based on metamaterial structure for microwave frequency application," Progress In Electromagnetics Research C, Vol. 76, 119-127, 2017. Google Scholar

10. Zhai, H., C. Zhan, L. Liu, and C. Liang, "A new tunable dual-band metamaterial absorber with wide-angle TE and TM polarization stability," Journal of Electromagnetic Waves and Applications, Vol. 29, No. 6, 774-785, Apr. 13, 2015.
doi:10.1080/09205071.2015.1024335 Google Scholar

11. Ayop, O. B., M. K. Abd Rahim, N. A. Murad, N. A. Samsuri, and R. Dewan, "Triple band circular ring-shaped metamaterial absorber for X-band applications," Progress In Electromagnetics Research M, Vol. 39, 65-75, 2014.
doi:10.2528/PIERM14052402 Google Scholar

12. Lu, L., S. Qu, H. Ma, F. Yu, S. Xia, Z. Xu, and P. Bai, "A polarization-independent wide-angle dual directional absorption metamaterial absorber," Progress In Electromagnetics Research M, Vol. 27, 91-201, 2012.
doi:10.2528/PIERM12102101 Google Scholar

13. Luo, H. and Y. Z. Cheng, "Ultra-thin dual-band polarization-insensitive and wide-angle perfect metamaterial absorber based on a single circular sector resonator structure," Journal of Electronic Materials, Vol. 47, No. 1, 323-328, 2018.
doi:10.1007/s11664-017-5770-8 Google Scholar

14. Bhattacharyya, S., S. Ghosh, and K. Vaibhav Srivastava, "Triple band polarization-independent metamaterial absorber with bandwidth enhancement at X-band," Journal of Applied Physics, Vol. 114, No. 9, 094514, Sep. 7, 2013.
doi:10.1063/1.4820569 Google Scholar

15. Chaurasiya, D., S. Ghosh, S. Bhattacharyya, and K. V. Srivastava, "An ultrathin quadband polarization-insensitive wide-angle metamaterial absorber," Microwave and Optical Technology Letters, Vol. 57, No. 3, 697-702, Mar. 1, 2015.
doi:10.1002/mop.28928 Google Scholar

16. Zheng, D., Y. Cheng, D. Cheng, Y. Nie, and R. Z. Gong, "Four-band polarization-insensitive metamaterial absorber based on flower-shaped structures," Progress In Electromagnetics Research, Vol. 142, 221-229, 2013.
doi:10.2528/PIER13052607 Google Scholar

17. Wang, W., M. Yan, Y. Pang, J. Wang, H. Ma, S. Qua, H. Chen, C. Xu, and M. Feng, "Ultra-thin quadri-band metamaterial absorber based on spiral structure," Applied Physics A, Vol. 118, No. 2, 443-447, Feb. 1, 2015.
doi:10.1007/s00339-014-8766-8 Google Scholar

18. Mao, Z., S. Liu, B. Bian, B. Wang, B. Ma, L. Chen, and J. Xu, "Multi-band polarization-insensitive metamaterial absorber based on Chinese ancient coin-shaped structures," Journal of Applied Physics, Vol. 115, No. 20, 204505, May 28, 2014.
doi:10.1063/1.4878697 Google Scholar

19. Smith, D. R., D. C. Vier, T. Koschny, and C. M. Soukoulis, "Electromagnetic parameter retrieval from inhomogeneous metamaterials," Physical Review E,, Vol. 71, No. 3, 036617, Mar. 22, 2005.
doi:10.1103/PhysRevE.71.036617 Google Scholar

Dr. Prakash Ranjan

Prof. Arvind Choubey

Dr. Santosh Kumar Mahto

Dr. Rashmi Sinha