77 GHz可重构液晶反射阵列的实现与特性研究

2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI:10.1109/ANTEMURSI.2009.4805092

A. Moessinger, S. Dieter, W. Menzel, S. Mueller, R. Jakoby

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引用次数: 14

摘要

提出了一种具有77 GHz波束重构能力的可调谐微带反射天线。可调性是通过使用各向异性液晶作为射频衬底来实现的，可通过低于15V的偏置电压进行调谐。反射器的特点是利用透镜设置形成高斯光束。反射器的属性已经根据其反射相位和幅度提取出来:虽然可以调到280左右。相位方面，相关的损失仍然相当高。然而，当施加适当的直流控制电压时，反射光束的模式测量显示出不同角度的光束准直。

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Realization and characterization of a 77 GHz reconfigurable liquid crystal reflectarray

A tunable microstrip reflectarray with beam reconfiguration capability at 77 GHz is presented. Tunablility is achieved by using anisotropic liquid crystal as RF-substrate, tunable by a biasing voltage below 15V. The reflector has been characterized by utilizing a lens setup forming a gaussian beam. The reflector properties has been extracted in terms of its reflected phase and magnitude: While it is possible to tune about 280. of phase, the associated losses are still quite high. Nevertheless, pattern measurements of the reflectarray showed distinct beam collimation towards different angles when appropriate DC control voltages are applied.

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2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting

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