Q-factor evaluation of traveling-wave ring resonator in Magnet-less Non-reciprocal Metamaterial (MNM)

T. Kodera
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Abstract

MNM (Magnet-less Non-reciprocal Metmaterial) is a technology to realize gyrotropic magnetic response by the combination of uni-directional component and resonant particle. As same as natural magnetic material, performance can be evaluated by half value of resonance width, which is inverse to Q-factor from viewpoint of resonator. In this paper, Q-factor of a unit-cell of MNM is estimated by circuit model consisting of FET and resonator model. The result clearly indicate the Q-factor of MNM unit-cell clearly depends on external factors expressed by load, which can be attributed to electromagnetic coupling to another system.
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无磁非互易超材料(MNM)行波环形谐振器的q因子评价
MNM (Non-reciprocal Metmaterial,无磁非互反材料)是一种将单向分量与共振粒子相结合来实现回转性磁响应的技术。与天然磁性材料一样,从谐振腔的角度来看,谐振宽度的半值与q因子相反,可以评价其性能。本文采用由场效应管和谐振器模型组成的电路模型估计了纳米管单元格的q因子。结果清楚地表明,MNM单元格的q因子明显取决于负载表示的外部因素,这些因素可归因于与另一个系统的电磁耦合。
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