Author:
Amiri Majid,Tofigh Farzad,Shariati Negin,Lipman Justin,Abolhasan Mehran
Abstract
AbstractBeing incident and polarization angle insensitive are crucial characteristics of metamaterial perfect absorbers due to the variety of incident signals. In the case of incident angles insensitivity, facing transverse electric (TE) and transverse magnetic (TM) waves affect the absorption ratio significantly. In this scientific report, a crescent shape resonator has been introduced that provides over 99% absorption ratio for all polarization angles, as well as 70% and 93% efficiencies for different incident angles up to $$\theta =80^{\circ }$$
θ
=
80
∘
for TE and TM polarized waves, respectively. Moreover, the insensitivity for TE and TM modes can be adjusted due to the semi-symmetric structure. By adjusting the structure parameters, the absorption ratio for TE and TM waves at $$\theta =80^{\circ }$$
θ
=
80
∘
has been increased to 83% and 97%, respectively. This structure has been designed to operate at 5 GHz spectrum to absorb undesired signals generated due to the growing adoption of Wi-Fi networks. Finally, the proposed absorber has been fabricated in a $$20 \times 20$$
20
×
20
array structure on FR-4 substrate. Strong correlation between measurement and simulation results validates the design procedure.
Publisher
Springer Science and Business Media LLC
Reference55 articles.
1. Veselago, V. G. The electrodynamics of substances with simultaneously negative values of $$\varepsilon$$ and $$\mu$$. Physics-Uspekhi10, 509–514 (1968).
2. Ziolkowski, R. W. & Erentok, A. Metamaterial-based efficient electrically small antennas. IEEE Trans. Antennas Propag.54, 2113–2130 (2006).
3. Guo, L. Y., Yang, H. L., Li, M. H., Gao, C. S. & Tian, Y. A mircostrip antenna with single square ring structured left-handed metamaterial. Acta Physica Sinica1, 021 (2012).
4. Bulu, I., Caglayan, H., Aydin, K. & Ozbay, E. Compact size highly directive antennas based on the srr metamaterial medium. New J. Phys.7, 223 (2005).
5. Liu, R. et al. Broadband ground-plane cloak. Science323, 366–369 (2009).
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