Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 6
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.6.5
UDC 621.396.96
Experimental study of nonlinear cylindrical surface covered with flexible metamaterial
N. N. Gorbatenko, D. V. Semenikhina
Southern Federal University, Institute of Radioengineering Systems and Control, Engelsa str., 1, Taganrog 347922, Russia
The paper was received on May 5, 2020, after correction - on May 23, 2020
Abstract. Nowadays, the study of interaction between medium with nonlinear elements and electromagnetic waves has a practical application on such fields of activity as: detection of human vital signs, tracking insects, people search in natural disasters. The essence of the implementation of this approach is to place a nonlinear RF-tag on the object. It converts the frequency of the incident signal and scatters the signal at the converted frequency. In the previous research, the cover of nonlinear RF-tag from the flat metamaterial contributed to the increase in the relative level of 2nd harmonic component in a scattered field. But using the flat metamaterial is not always possible. Concerning, in this paper the experimental study of nonlinear RF-tag was carried out. RF-tag is a nonlinear cylindrical surface covered with flexible metamaterial that has absorber properties at X band frequencies. The frequency characteristics of the flexible metamaterial are experimentally obtained. The research confirmed previously obtained calculation that this metamaterial is an absorber at the fundamental frequency and an ordinary dielectric at the second harmonic. Using an experimental setup, a study of the frequency characteristics of nonlinear RF-tag for various radii of a metal cylinder is carried out. The results of the study show that the use of flexible metamaterial helps increasing the relative level of the 2nd harmonic in a scattered field.
Key words: flexible metamaterial, nonlinear RF-tag, nonlinear cylindrical structure, nonlinear scattering effect.
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For citation:
Gorbatenko N.N., Semenikhina D.V. Experimental study of nonlinear cylindrical surface covered with flexible metamaterial. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No. 6. Available at http://jre.cplire.ru/jre/jun20/5/text.pdf. DOI: https://doi.org/10.30898/1684-1719.2020.6.5