volume | PIER Journals

2019-03-12

Impact of External DC Magnetic Bias Field and Frequency on the Bistability Features of a Nonlinear Microwave Meta-Atom

Aleksey A. Girich,

Dr. Aleksey A. Girich

Usikov Institute for Radiophysics and Electronics of NAS of Ukraine

Ukraine

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Sergey I. Tarapov

Prof. Sergey I. Tarapov

Radiospectroscopy Department

Institute for Radiophysics and Electronics of NAS

Ukraine

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Progress In Electromagnetics Research Letters, Vol. 82, 81-87, 2019

doi:10.2528/PIERL18112701

Abstract

In this paper, we present our experimental study of the effect of the external DC magnetic bias field on the nonlinear properties of meta-atom loaded with ferrite elements of different shapes. It is demonstrated experimentally that the adjustment of the resonance frequency of the meta-atom loaded with the ferrite elements of different shapes is possible not only by the input microwave power but also by the external DC magnetic bias field. It is shown that as the external DC magnetic bias field is increased to a certain value, the resonance curve of the nonlinear meta-atom demonstrates bistability. In addition, we achieve significant enhancement of the meta-atom nonlinearity using the nonlinear properties of both ferrite and varactor diode.

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Aleksey A. Girich, and Sergey I. Tarapov, "Impact of External DC Magnetic Bias Field and Frequency on the Bistability Features of a Nonlinear Microwave Meta-Atom," Progress In Electromagnetics Research Letters, Vol. 82, 81-87, 2019.
doi:10.2528/PIERL18112701

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