Magnetic tuning of electrically resonant metamaterial with inclusion of ferrite

Lei Kang, Qian Zhao, Hongjie Zhao, Ji Zhou

    Research output: Contribution to journalArticle

    16 Scopus citations

    Abstract

    We experimentally demonstrate a magnetic tuning of electrically resonant metamaterial (EMM) at microwave frequencies by introducing microwave ferrite rods into the periodic array of electrically resonant element. Different from those based on controlling the capacitance of equivalent LC circuit, this tunability arises from a mechanism of magnetically tuning the inductance of resonant element via the active ambient effective permeability. For magnetic fields from 0 to 5000 Oe, resonance frequency of the EMM can be continuously and reversibly tuned in a range of about 800 MHz. The active effective permittivity has also been investigated through the simulated scattering parameters.

    Original languageEnglish (US)
    Article number171909
    JournalApplied Physics Letters
    Volume93
    Issue number17
    DOIs
    StatePublished - Nov 6 2008

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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