"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 8, 2018

contents of issue      DOI  10.30898/1684-1719.2018.8.10     full text in Russian (pdf)  

The possibility of expanding the stripe of working frequencies of an artificial magnetic conductor
on the basis of a strip-passing frequency-selective structure

 

O. A. Dyakonova, Yu. N. Kazantsev

Fryazino Branch of Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Vvedensky Sq.1, Fryazino Moscow region 141190, Russia

 

The paper is received on July 31, 2018

 

Abstract. The presence of functional connections between the characteristics of an artificial magnetic conductor, the parameters of structures with frequency selective surfaces and the dielectric layer determine the possibility of expanding the range of operating frequencies. An analytical expression for such relationships is the formula for estimating the phase of the reflection coefficient from an artificial magnetic conductor obtained using the theory of electrical circuits and long lines. With the help of the presented analytical expressions the estimation of ways of expansion of a range of operating frequencies of an artificial magnetic conductor on the basis of band-pass frequency selective structures is carried out. UC-PBG structure was chosen as the basic calculation model. The purpose of numerical calculations of the frequency dependence of the phase of the reflection coefficient on the artificial magnetic conductor was to study ways of modifying the basic model of the artificial magnetic conductor, which provides an extension of the operating frequency band while maintaining the value of the resonant, i.e., the Central frequency of this band. Two variants of such modification are considered. The numerical calculation confirmed that the decrease in the dielectric permeability of the layer between the frequency selective surface and the conductive screen while increasing the thickness of the layer and the element size of the frequency selective structure allows to increase the band of the operating frequencies of the artificial magnetic conductor. Reduction of the dielectric permeability of the layer from 10.2 to 1.2 with doubling the layer thickness and the size of the lattice element allowed to expand the band of operating frequencies from 9% to 16%. The numerical calculation showed that the increase in the thickness of the dielectric layer without reducing the dielectric permeability does not allow to expand the range of operating frequencies of the artificial magnetic conductor (in contrast to the artificial magnetic conductor based on capacitive grids).

Key words: artificial magnetic conductor, frequency selective surface, numerical calculation, band of operating frequencies, resonant frequency.

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For citation:
O. A. Dyakonova, Yu. N. Kazantsev. The possibility of expanding the stripe of working frequencies of an artificial magnetic conductor on the basis of a strip-passing frequency-selective structure. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 8. Available at http://jre.cplire.ru/jre/aug18/10/text.pdf

DOI  10.30898/1684-1719.2018.8.10