Scientific articles
\
Applied sciences. Medicine. Technology
\
Engineering. Technology in general
\
Mechanical engineering in general. Nuclear technology. Electrical engineering. Machinery
\
Electrical engineering
Design of a Compact Fractal Unit Cell Absorber for the 2.45 GHz Band
Journal: International Journal of Wireless and Microwave Technologies @ijwmt
Article in issue: 1 Vol.11, 2021.
Free access
This paper presents the design of a fractal unit cell absorber for electromagnetic energy absorption in the 2.45 GHz band. The configuration is based on a second-order Minkowski-inspired fractal geometry, through which a compact structure is realized. The proposed design is achieved using full-wave electromagnetic simulations and the study of an equivalent circuit model. At 2.45 GHz, the synthesized structure achieves a near-perfect absorptivity of 99%, with a modest footprint of 0.11λ. The realized structure can serve as a constituent element for the design of absorber arrays to mitigate multipath effects and prevent eavesdropping attacks in indoor wireless environments.
Electromagnetic absorber
\ metamaterial
\ Minkowski fractal
\ unit cell
Similar articles in the section Electrical engineering
Short address: https://sciup.org/15017663
IDS: 15017663 | DOI: 10.5815/ijwmt.2021.01.02
References Design of a Compact Fractal Unit Cell Absorber for the 2.45 GHz Band
- Ali Z, Muneer B, Shankar Chowdhry B, et al. Design of Microwave Pyramidal Absorber for Semi Anechoic Chamber in 1 GHz~20 GHz range. Int. J. Wirel. Microw. Technol. 2020;10:22–29.
- Tsiftsis TA, Valagiannopoulos C, Liu H, et al. Metasurface-Coated Devices: A New Paradigm for Energy-Efficient and Secure Communications in 5G and Beyond. arXiv:2006.12044 [eess] [Internet]. 2020;1–8. Available from: http://arxiv.org/abs/2006.12044.
- Landy NI, Sajuyigbe S, Mock JJ, et al. Perfect metamaterial absorber. Phys. Rev. Lett. 2008;100.
- Wen Q-Y, Zhang H-W, Yang Q-H, et al. Perfect Metamaterial Absorbers in Microwave and Terahertz Bands. Metamaterial. 2012;
- Liu X, Fan K, Shadrivov I V., et al. Experimental realization of a terahertz all-dielectric metasurface absorber. Opt. Express. 2017;25:191.
- Luo H, Cheng Y. Dual-band terahertz perfect metasurface absorber based on bi-layered all-dielectric resonator structure. Opt. Mater. (Amst). [Internet]. 2019;96:109279. Available from: https://doi.org/10.1016/j.optmat.2019.109279.
- Luo H, Cheng Y. Thermally tunable terahertz metasurface absorber based on all dielectric indium antimonide resonator structure. Opt. Mater. (Amst). [Internet]. 2020;102:109801. Available from: https://doi.org/10.1016/j.optmat.2020.109801.
- Yudistira HT, Ginting LY, Kananda K. High absorbance performance of symmetrical split ring resonator (SRR) terahertz metamaterial based on paper as spacer. Mater. Res. Express [Internet]. 2018;6:025804. Available from: https://iopscience.iop.org/article/10.1088/2053-1591/aaf27e.
- Kaur J. Dual Band High Directivity Microstrip Patch Antenna RotatedStepped-Impedance Array Loaded with CSRRs for WLAN Applications. Int. J. Wirel. Microw. Technol. 2016;6:1–11.
- A. Saleh A, S. Abdullah A. A Novel Design of Patch Antenna Loaded with Complementary Split-Ring Resonator and L- Shape Slot for (WiMAX/WLAN) Applications. Int. J. Wirel. Microw. Technol. 2014;4:16–25.
- Zhao J, Cheng Y. Ultrabroadband Microwave Metamaterial Absorber Based on Electric SRR Loaded with Lumped Resistors. J. Electron. Mater. 2016;45:5033–5039.
- Moghbeli E, Askari HR, Forouzeshfard MR. The effect of geometric parameters of a single-gap SRR metamaterial on its electromagnetic properties as a unit cell of interior invisibility cloak in the microwave regime. Opt. Laser Technol. [Internet]. 2018;108:626–633. Available from: https://doi.org/10.1016/j.optlastec.2018.07.025.
- Venneri F, Costanzo S, Di Massa G. Fractal-Shaped Metamaterial Absorbers for Multireflections Mitigation in the UHF Band. IEEE Antennas Wirel. Propag. Lett. 2018;17:255–258.
- Venneri F, Costanzo S. Fractal microwave absorbers for multipath reduction in UHF-RFID systems. Adv. Intell. Syst. Comput. 2017;570:1008–1013.
- Venneri F, Costanzo S, Borgia A. A dual-band compact metamaterial absorber with fractal geometry. Electron. 2019;8:2–9.
- Ma YB, Zhang HW, Li YX. Study on a novel dual-band metamaterial absorber by using fractal Koch curves. Wuli Xuebao/Acta Phys. Sin. 2014;63:1–7.
- Costanzo S, Venneri F. Innovative Fractal-Based Metasurface for Energy Harvesting. URSI GASS [Internet]. Rome; 2020. p. 1–3. Available from: http://www.ursi.org/proceedings/procGA20/papers/PID6351651.pdf.
- Costa F, Genovesi S, Monorchio A, et al. A circuit-based model for the interpretation of perfect metamaterial absorbers. IEEE Trans. Antennas Propag. 2013;61:1201–1209.
- Amiri M, Tofigh F, Shariati N, et al. Wide-angle metamaterial absorber with highly insensitive absorption for TE and TM modes. Sci. Rep. [Internet]. 2020;10:1–13. Available from: https://doi.org/10.1038/s41598-020-70519-8.
