volume | PIER Journals

Abstract

A novel design of wideband, ultra-thin, wide-angle metamaterial microwave absorber has been presented. The unit cell of the proposed structure is designed by using parametric optimization in such a way that absorption frequencies come closer and give wideband response. For normal incidence, the simulated FWHM bandwidth of the proposed structure is 1.94 GHz, i.e. from 5.05 GHz to 6.99 GHz and -10 dB absorption bandwidth is 1.3 GHz from 5.27 GHz to 6.57 GHz. The proposed structure has been analyzed for different angles of polarization, and it gives high absorption (more than 50%) for oblique angles of incidence up to 60˚. The designed absorber is in low profile with a unit cell size of λ₀/6 and ultrathin with a thickness of λ₀/32 at the center frequency of 5.92 GHz corresponding to 10 dB absorption bandwidth. The current and electromagnetic field distributions have been analyzed to understand the absorption mechanism of the absorber. An array of the proposed absorber has been fabricated and experimentally tested for various polarization angles and oblique incidences of electromagnetic wave. The proposed absorber is well suited for surveillance and other defense applications.

1. Landy, N. I., S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, "Perfect metamat absorber," Phys. Rev. Lett., Vol. 100, 207402, 2008.
doi:10.1103/PhysRevLett.100.207402 Google Scholar

2. Chambers, B., "Optimum design of a salisbury screen radar absorber," Electron. Lett., Vol. 30, 1353-1354, 1994.
doi:10.1049/el:19940896 Google Scholar

3. Salisbury, W. W., "Absorbent body of electromagnetic waves,", United States Patent 2,599,944, June 10, 1952. Google Scholar

4. Smith, D. R., W. J. Padilla, D. C. Vier, S. C. Nemat-Nasser, and S. Schultz, "Composite medium with simultaneously negative permeability and permittivity," Phys. Rev. Lett., Vol. 84, 4184-4187, 2000.
doi:10.1103/PhysRevLett.84.4184 Google Scholar

5. Schurig, D., J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, "Metamaterial electromagnetic cloak at microwave frequencies," Science, Vol. 314, 977-980, 2006.
doi:10.1126/science.1133628 Google Scholar

6. Enoch, S., G. Tayeb, and P. Vincent, "A metamaterial for directive emission," Phys. Rev. Lett., Vol. 89, 3901-3904, 2002.
doi:10.1103/PhysRevLett.89.213902 Google Scholar

7. Fallahi, A., A. Yahaghi, H. R. Benedickter, H. Abiri, M. Sarabandi, and C. Hafner, "Thin wideband radar absorbers," IEEE Trans. Antennas Propag., Vol. 58, 4051-4058, 2010.
doi:10.1109/TAP.2010.2078482 Google Scholar

8. Puscasu, I. and W. L. Schaich, "Narrow-band, tunable infrared emission from arrays of microstrip patches," Appl. Phys. Lett., Vol. 92, 233102, 2008.
doi:10.1063/1.2938716 Google Scholar

9. Liu, X., T. Starr, A. F. Starr, and W. J. Padilla, "Infrared spatial and frequency selective Infrared spatial and frequency selective," Phys. Rev. Lett., Vol. 104, 207403, 2010.
doi:10.1103/PhysRevLett.104.207403 Google Scholar

10. Rosenberg, J., R. V. Shenoi, S. Krishna, and O. Painter, "Design of plasmonic photonic crystal resonant cavities for polarization sensitive infrared photodetectors," Appl. Phys. Lett., Vol. 95, 161101, 2009.
doi:10.1063/1.3244204 Google Scholar

11. Hao, J., J. Wang, X. Liu, W. J. Padilla, L. Zhou, and M. Qiu, "High performance optical absorber based on a plasmonic metamaterial," App. Phys. Lett., Vol. 96, 251104, 2010.
doi:10.1063/1.3442904 Google Scholar

12. Li, M. H., 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

13. Lee, H.-M. and H. Lee, "A dual band metamaterial absorber based with resonant-magnetic structures," Progress In Electromagnetics Research Letters, Vol. 33, 1-12, 2012.
doi:10.2528/PIERL12050110 Google Scholar

14. Ghosh, S., D. Sarkar, S. Bhattacharyya, and K. V. Srivastava, "Design of an ultra-thin dual band microwave metamaterial absorber," 6th Annual Conf., ATMS, 38-41, Kolkata, India, 2013. Google Scholar

15. Bhattacharyya, S. and K. V. Srivastava, "Triple band polarization independent ultra-thin metamatetial absorber using electric field driven LC resonator," Journal App. Phys., Vol. 115, 064508, 2014.
doi:10.1063/1.4865273 Google Scholar

16. Park, J. W., P. V. Tuong, J. Y. Rhee, K. W. Kim, W. H. Jang, E. H. Choi, L. Y. Chen, and Y. P. Lee, "Multi-band metamaterial absorber based on the arrangement of donut-type resonators," Opt. Exp., Vol. 21, 9691-9702, 2013.
doi:10.1364/OE.21.009691 Google Scholar

17. Ghosh, S., S. Bhattacharyya, Y. Kaiprath, and K. V. Srivastava, "Bandwidth enhanced polarization insensitive microwave metamaterial absorber and its equivalent circuit model," Journal App. Phys., Vol. 115, 104503, 2014.
doi:10.1063/1.4868577 Google Scholar

18. Lee, J. and S. Lim, "Bandwidth-enhanced polarization insensitive microwave metamaterial absorber using double resonance," Electron. Lett., Vol. 47, 8-9, 2011.
doi:10.1049/el.2010.2770 Google Scholar

19. Bhattacharyya, S., S. Ghosh, and K. V. Srivastava, "Triple band polarization independent ultra-thin metamaterial absorber with bandwidth enhancement at X-band," Journal App. Phys., Vol. 115, 094514, 2013.
doi:10.1063/1.4820569 Google Scholar

20. Bhattacharyya, S., S. Ghosh, and K. V. Srivastava, "Bandwidth-enhanced metamaterial absorber using electric filed driven LC resonator for airborne radar applications," Microw. Opt. Techno. Lett., Vol. 55, 2131-2137, 2013.
doi:10.1002/mop.27786 Google Scholar

21. Ghosh, S., S. Bhattacharyya, and K. V. Srivastava, "Bandwidth enhancement of an ultrathin polarization insensitive metamaterial absorber," Microw. Opt. Techno. Lett., Vol. 56, 350-355, 2014.
doi:10.1002/mop.28122 Google Scholar

22. Bhattacharyya, S., S. Ghosh, D. Chaurasiya, and K. V. Srivastava, "Bandwidth-enhanced dual-band dual-layer polarization-independent ultra-thin metamaterial absorber," Appl. Phys. A, Vol. 118, 207-215, 2014.
doi:10.1007/s00339-014-8908-z Google Scholar

23. Jaradat, H. and A. Akyurtlu, "Infrared (IR) absorber based on multiresonant structures," IEEE Trans. Antennas Propag. Lett., Vol. 11, 1222-1225, 2012.
doi:10.1109/LAWP.2012.2223652 Google Scholar

24. Ghosh, S., S. Bhattacharyya, D. Chaurasiya, and K. V. Srivastava, "An ultrwideband ultrathin metamaterial absorber based on circular split rings," IEEE Trans. Antennas Propag. Lett., Vol. 14, 1172-1175, 2015.
doi:10.1109/LAWP.2015.2396302 Google Scholar

25. Ghosh, S. and K. V. Srivastava, "An equivalent circuit model of FSS-based metamaterial absorber using coupled line theory," IEEE Antennas Wireless Propag. Lett., Vol. 14, 511-514, 2015.
doi:10.1109/LAWP.2014.2369732 Google Scholar

26. Kafesaki, M., I. Tsiapa, N. Katsarakis, T. Koschny, C. M. Soukoulis, and E. N. Economou, "Left-handed metamaterials: The fishnet structure and its variations," Phys. Rev. B, Vol. 75, 235114, 2007.
doi:10.1103/PhysRevB.75.235114 Google Scholar

Dr. Deepak Sood

Dr. Chandra Charu Tripathi