Theory of a high frequency magnetic tunable filter and phase shifter
Theory of a high frequency magnetic tunable filter and phase shifter
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DOI：
10.1063/1.366601
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发表时间：
1998-06
影响因子：
3.2
通讯作者：
R. J. Astalos;R. Camley
中科院分区：
文献类型：
--
作者：
R. J. Astalos;R. Camley
微波在层状介电/铁磁体中的传播已经被研究过。然而，先前的研究使用了铁磁体中全磁导率张量的近似。这种近似在该结构可以用作带通滤波器的频率范围内失效。在这里，我们试图用全渗透率张量来验证预测带通区域的行为。我们还探讨了在两种器件中使用分层结构：可调带通滤波器和可调移相器。
Microwave propagation in a layered dielectric/ferromagnet were explored in the past. Previous studies, however, made use of an approximation to the full permeability tensor in the ferromagnet. This approximation fails in a frequency range where the structure can act as a band pass filter. Here we seek to verify the behavior in the predicted band pass region using the full permeability tensor. We also explore the use of the layered structure in two devices: a tunable band pass filter and an adjustable phase shifter.