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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Reconfigurable reflectarray antenna using single-layer radiator controlled by PIN diodes
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Reconfigurable reflectarray antenna using single-layer radiator controlled by PIN diodes

机译：使用由PIN二极管控制的单层辐射器的可重构反射阵列天线

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摘要

A new type of pattern-reconfigurable reflectarray phased by reconfigurable unit cells that are centrally controlled by a laptop is presented. The proposed reflectarray with single-layer radiators employs a phasing element formed by a fixed-size circular ring attached by a variable-length arc phase delay line controlled by positive-intrinsic-negative diodes. The biasing network of the diodes is properly designed to minimise the interference between the radiating structure and the biasing circuit. To that end, the biasing circuit is placed on a substrate layer below the ground plane whereas the PIN switching diodes are embedded within radiators. The biasing signal is transmitted to the switching elements at the top layer using vias that penetrate the thin substrate layer, the foam layer and the ground plane. Investigations are carried out to verify the performances of the phasing element using a waveguide simulator. A reflectarray, which includes a C-band offset fed 8 × 8 elements, is configured to switch its main beam between 20° and 30° from the broadside direction. A biasing control unit is added to the fabricated reflectarray and activated using a laptop. The measured radiation patterns of the proposed reflectarray demonstrate a beam-switching characteristic from the broadside direction, which confirm the proposed design method.
机译：提出了一种新型的图案可重配置反射阵列，该阵列由笔记本电脑集中控制的可重配置单元构成。所提出的具有单层辐射器的反射阵列采用了一种定相元件，该元件由固定大小的圆环形成，该圆环由正正负二极管控制的可变长度电弧相位延迟线连接。二极管的偏置网络经过适当设计，可最大程度地降低辐射结构和偏置电路之间的干扰。为此，将偏置电路放置在接地层下方的基板层上，而PIN开关二极管则嵌入在辐射器内。使用穿透薄基板层，泡沫层和接地层的通孔将偏置信号传输到顶层的开关元件。使用波导模拟器进行了研究以验证定相元件的性能。包括一个馈送8×8元素的C波段偏移的反射阵列被配置为从宽边方向在20°和30°之间切换其主光束。将偏置控制单元添加到制造的反射阵列中，并使用笔记本电脑激活。所提出的反射阵列的实测辐射图显示了从宽边方向的光束切换特性，这证实了所提出的设计方法。

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