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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Microwave tunable split ring resonator bandpass filter using nematic liquid crystal materials
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Microwave tunable split ring resonator bandpass filter using nematic liquid crystal materials

机译：使用向列型液晶材料的微波可调谐开环谐振器带通滤波器

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摘要

In order to improve frequency selectivity of microwave devices and raise the frequency spectrum efficiency effectively, a new kind of microwave continuously tunable Split Ring Resonator (SRR) band-pass filter, using the field-induced nematic liquid crystal, is presented in this paper. Based on the fundamental theory of the electro-optic effect of liquid crystal, applying the bias voltage on liquid crystal can change its permittivity to mainly realize passband frequency shift at microwave band. The frequency characteristics of the filter are analysed. The proposed parameter extraction on the base of the frequency characteristics can easily analyze distributing parameter circuit about this liquid crystal filter. The simulation results shows that this liquid crystal tuning filter achieves 750 MHz offset obviously. Compared with the other tuning techniques, the liquid crystal tuning technology has many advantages, such as continuously tuning, miniaturization, low tuning voltage, etc. Thus, it shows great potentials for modern-communication-applications. (C) 2016 Elsevier GmbH. All rights reserved.
机译：为了提高微波器件的频率选择性并有效地提高频谱效率，本文提出了一种利用场致向列液晶的新型微波连续可调裂环谐振器（SRR）带通滤波器。根据液晶电光效应的基本理论，在液晶上施加偏置电压可以改变其介电常数，从而主要实现微波频段的通带频移。分析了滤波器的频率特性。提出的基于频率特性的参数提取方法可以很容易地分析该液晶滤波器的分布参数电路。仿真结果表明，该液晶调谐滤波器明显实现了750 MHz的失调。与其他调谐技术相比，液晶调谐技术具有许多优点，例如连续调谐，小型化，低调谐电压等。因此，它在现代通信应用中显示出巨大的潜力。 （C）2016 Elsevier GmbH。版权所有。

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