Two factors affecting the bandwidth of a reflectarray, the element phase error and the non-constant path delay phase error, have been investigated. A new solution is proposed to reduce the effect of the second factor. Using this method, without adding any particular complexity to the structure, the gain bandwidth of an array rises from 17 to 24%. This array is designed at the center frequency of 1.2 THz which can be used as a lens in the terahertz range. Since the dimensions of an array for such an application would be very large compared to the wavelength, the near-field to far-field transformation is used to accelerate the simulation time.

中文翻译：

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一种增强太赫兹反射阵列带宽的技术

研究了影响反射阵列带宽的两个因素，即元件相位误差和非恒定路径延迟相位误差。提出了一种新的解决方案以减少第二个因素的影响。使用这种方法，在不增加结构任何特殊复杂性的情况下，阵列的增益带宽从17％上升到24％。该阵列的设计中心频率为1.2 THz，可用作太赫兹范围内的透镜。由于与波长相比，用于此类应用的阵列的尺寸将非常大，因此使用近场到远场转换可加快仿真时间。