A Broadband, Polarization Insensitive, Wide Incidence-AngleSlotted Ring/Lumped Resistor-Based Metamaterial Absorber for K u-Band Applications

A broadband-slotted ring/lumped resistor-based metamaterial absorber (MA) is presented in this study for Ku -band microwave applications. Numerical results of the MA indicate that it can achieve a broadband absorption ratio of more than 85% in the frequency range of 12.4–17.6 GHz and has active polarization insensitivity and wide incidence-angle response over the entire operation band between 12.4-17.6 GHz. The designed MA is ultrathin around λ/14.7 in terms of wavelength at its lowest operation frequency, corresponding to 1.7 mm. The proposed unit-cell structure of the MA is novel, consisting of a slotted ring with eight symmetrically-located lumped resistors, FR-4 material, and a metallic ground, which is compatible with low-cost PCB fabrication; therefore, the MA is suitable for practical microwave applications in the Ku -band

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1. N. Garcia, M. Nieto-Vesperinas, ''Left-Handed Materials Do Not Make a Perfect Lens''. Phys. Rev. Lett., vol. 88, no. 20, pp. 207403-4, May, 2002. [Crossref]

2. M. M. Hasan, M. R. I Faruque, M. T. Islam, ''Dual band metamaterial antenna for LTE/bluetooth/WiMAX system'', Sci. Rep., vol. 8, no. 1240, pp. 1-17, Jan. 2018. [Crossref]

3. Y. Xie, X. Fan, Y. Chen, J. D. Wilson, R. N. Simons, J. Q. Xiao, ''A subwavelength resolution microwave/6.3 GHz camera based on a metamaterial absorber'', Sci. Rep., vol. 7, no. 40490, pp. 1-8, Jan. 2017. [Crossref]

4. D. R. Smith, Willie J. Padilla, D. C. Vier, S. C. Nemat-Nasser, S. Schultz, ''Composite Medium with Simultaneously Negative Permeability and Permittivity'', Phys. Rev. Lett., vol. 84, pp. 4184-4187, May, 2000. [Crossref]

5. D. R. Smith, S. Schultz, P. Markoš, M. Soukoulis, ''Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients'', Phys. Rev. B - Condens. Matter Mater. Phys., vol. 65, no. 19, pp. 195104-5, Apr. 2002. [Crossref]

6. J. B. Pendry, D. Schurig, D. R. Smith, ''Controlling electromagnetic fields'', Science, vol. 312, no. 5781, pp. 1780-1782, June, 2006. [Crossref]

7. G. T. Ruck GT, D. E. Barrick DE, W. D. Stuart WD, C. K. Krichbaum, ''Radar Cross Section Handbook'', Springer US, New York, USA, 1970. [Crossref]

8. W. W. Salisbury, ''Absorbant body for electromagnetic waves'', US Pat., no. 486608, June, 1952.

9. D. R. Smith, J. B. Pendry, M. C. K. Wiltshire, ''Metamaterials and negative refractive index'', Science, vol. 305, no. 5685, pp. 788-792, Aug. 2004. [Crossref]

10. P. Yu et al., ''Broadband Metamaterial Absorbers'', Adv. Opt. Mater., vol. 7, no. 3, pp. 1800995-32, Feb. 2019.

11. S. Gu, B. Su, X. Zhao, ''Planar isotropic broadband metamaterial absorber'', J. Appl. Phys., vol. 114, no. 16, pp. 163702-6, Oct. 2013. [Crossref]

12. C. Zhanga, Q. Chenga, J. Yang, J. Zhao, T. J. Cui, ''Broadband metamaterial for optical transparency and microwave absorption'', Appl. Phys. Lett., vol. 110, no. 14, Apr. 2017. [Crossref]

13. Y. J. Yoo et al., ''Metamaterial absorber for electromagnetic waves in periodic water droplets'', Sci. Rep., vol. 5 pp. 14018-8, Sep. 2015. [Crossref]

14. M. Yoo, S. Lim, ''Polarization-independent and ultrawideband metamaterial absorber using a hexagonal artificial impedance surface and a resistor-capacitor layer'', IEEE Trans. Antennas Propag., vol. 62, no. 5, pp. 2652-2668, May, 2014. [Crossref]

15. T. T. Nguyen, S. Lim, ''Design of Metamaterial Absorber using Eight-Resistive-Arm Cell for Simultaneous Broadband and Wide-Incidence-Angle Absorption'', Sci. Rep., vol. 8, no. 6633, pp. 2075-10, Apr. 2018. [Crossref]

16. M. S. Islam, Md. Samsuzzaman, G. K. Beng, N. Misran, M. T. Islam, ''A Gap Coupled Hexagonal Split Ring Resonator Based Metamaterial for S-Band and X-Band Microwave Applications'', IEEE Access, vol. 8, pp. 68239-68253, Apr. 2020. [Crossref]

17. T. Q. H. Nguyen, T. K. H. Nguyen, T. N. Cao, H. Nguyen, L. G. Bach, ''Numerical study of a broadband metamaterial absorber using a single split circle ring and lumped resistors for X-band applications'', AIP Adv., vol. 10, no. 3, pp. 035326-1, Mar. 2020. [Crossref]

18. CST Microwave Studio, http://www.cst.com, CST GmbH, Darmstadt, Germany.

19. S. Li, J. Gaoa, X. Cao, W. Li, Z. Zhang, D. Zhang, ''Wideband, thin, and polarization-insensitive perfect absorber based the double octagonal rings metamaterials and lumped resistances'', J. Appl. Phys., vol. 116, no. 4, pp. 043710-6, July, 2014. [Crossref]

20. L. Sun et al., ''A simplified design of broadband metamaterial absorber covering X- And Ku- band'', Mater. Res. Express., vol. 6, no. 12, pp. 125805-112, 2019. [Crossref]

21. J. Yang, Z. Shen, ''A thin and broadband absorber using double-square loops'', IEEE Antennas Wirel. Propag. Lett., vol. 6, pp. 288-291, Oct. 2007. [Crossref]