A liquid crystal (LC)-based double dipole terahertz phase shifter is proposed. The block model is utilized in simulations to analysis the influence of inhomogeneity of the LC substrate. The sensitive parameters of the double dipole are simulated and analyzed. An array consisting of 30 × 30 patch elements is designed and fabricated. Experimental results exhibit that the phase shift is over 360° in the range of 355.8–358.8 GHz at 1 kHz, at an applied AC bias in the 0–50 V range. The phase change at different frequencies of AC bias voltage is also investigated, and the effect of the frequency of AC bias voltage is expressed by the coefficient of the amplitude of the bias voltage.

中文翻译：

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基于液晶的可重构反射阵列太赫兹移相器的设计与实验验证

提出了一种基于液晶（LC）的双偶极太赫兹移相器。块模型用于仿真中，以分析LC基板不均匀性的影响。对双偶极子的敏感参数进行了仿真和分析。设计并制造了一个由30×30的贴片元件组成的阵列。实验结果表明，在1kHz的355.8–358.8 GHz范围内，在0–50 V范围内施加交流偏置时，相移超过360°。还研究了交流偏置电压在不同频率下的相位变化，并通过偏置电压幅度系数来表示交流偏置电压频率的影响。