Magnetic tuning of electrically resonant metamaterial with inclusion of ferrite
Magnetic tuning of electrically resonant metamaterial with inclusion of ferrite
复制标题
包含铁氧体的电谐振超材料的磁调谐
DOI：
10.1063/1.3006429
复制
发表时间：
2008-10-27
影响因子：
4
通讯作者：
Zhou, Ji
中科院分区：
文献类型：
--
作者：
Kang, Lei;Zhao, Qian;Zhou, Ji
我们通过将微波铁氧体棒引入电谐振元件的周期性阵列中，实验演示了微波频率下电谐振超材料（EMM）的磁调谐。与基于控制等效LC电路的电容的可调性不同，这种可调性源自通过主动环境有效磁导率磁调节谐振元件的电感的机制。对于0至5000 Oe的磁场，EMM的谐振频率可以在约800 MHz的范围内连续和可逆地调谐。还通过模拟散射参数研究了主动有效介电常数。 (C) 2008 年美国物理研究所。 [DOI：10.1063/1.3006429]
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. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3006429]