Liquid-crystal-based mm-wave tunable resonator
Liquid-crystal-based mm-wave tunable resonator
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发表时间：
2010-11
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通讯作者：
M. Yazdanpanahi;S. Bulja;D. Mirshekar-Syahkal;R. James;S. Day;F. Fernández
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作者：
M. Yazdanpanahi;S. Bulja;D. Mirshekar-Syahkal;R. James;S. Day;F. Fernández
提出了一种新型的毫米波可调谐平面谐振器，该谐振器基于可调谐液晶（LC）基片。所提出的结构利用电场偏置来对准LC分子，从而提供对LC基板的介电性质（各向异性）的直接控制。使用的LC是通常称为E7的混合物。在30 - 60 GHz范围内实现了约6%的可调谐性;即，在30 GHz附近为1.94 GHz，在60 GHz附近为3.58 GHz。所提出的结构也可以用来实现小型化的可调谐滤波器在毫米波/微波频率的宽调谐范围。
A new tunable planar resonator based on nematic liquid crystals (LC) substrate for applications at mm-wave frequencies is presented. The proposed structure utilizes an electric field bias to align the LC molecules, offering direct control over the dielectric properties (anisotropy) of the LC substrate. The LC used is a mixture commonly referred to as E7. A tunability of about 6% is achieved in the 30 – 60 GHz range; i.e. 1.94 GHz around 30 GHz and 3.58 GHz around 60 GHz. The proposed structure can also be exploited to realize miniaturized tunable filters with wide tuning range at mm-wave/microwave frequencies.