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IMPACT OF EXTERNAL DC MAGNETIC BIAS FIELD AND FREQUENCY ON THE BISTABILITY FEATURES OF A NONLINEAR MICROWAVE META-ATOM
Author(s) -
Aleksey Girich,
S. I. Tarapov
Publication year - 2019
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl18112701
Subject(s) - microwave , bistability , nonlinear system , atom (system on chip) , field (mathematics) , physics , magnetic field , condensed matter physics , atomic physics , optoelectronics , quantum mechanics , engineering , mathematics , pure mathematics , embedded system
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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