Passive Beam-Steering Gravitational Liquid Antennas
Passive Beam-Steering Gravitational Liquid Antennas
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DOI：
10.1109/tap.2019.2937362
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发表时间：
2020-04-01
影响因子：
5.7
通讯作者：
Huang, Yi
中科院分区：
文献类型：
--
作者：
Song, Chaoyun;Bennett, Elliot L.;Huang, Yi
我们提出了一种新概念，利用重力引起的液体流动性行为，被动地将天线辐射束转向固定方向。与现有技术完全不同，所提出的天线不需要任何额外的机械结构、相移电路、液体泵、可调谐元件或其相关组件。通过正确设计液体介电谐振器的结构和谐振模式，所提出的无源天线可以在天线物理重新定向时自动将辐射波束转向固定和期望的通信方向。采用新型液体材料提出了一种基本谐振频段为1.4-1.8 GHz的天线原型，其无源波束控制特性已得到实验验证。这种简单、优雅且低成本的天线首次将陀螺仪校正、重力和波束控制结合在一起，对需要在某些方向上自适应天线波束的无线电通信和雷达系统产生了重大影响。
We present a new concept to passively steer the antenna radiation beam to a fixed direction by utilizing the liquid fluidity behavior due to gravity. Completely different from existing technologies, the proposed antenna does not require any additional mechanical structures, phase shifting circuitry, liquid pumps, tunable elements, or their associated components. By properly designing the structure and resonant mode of the liquid dielectric resonator, the proposed passive antenna can automatically steer the radiation beam to the fixed and desired direction for communication upon physical reorientation of the antenna. An antenna prototype has been proposed with a fundamental resonant band of 1.4-1.8 GHz by using new liquid materials, while its passive beam-steering feature has been experimentally verified. This simple, elegant, and low-cost antenna has combined the gyroscopic correction, gravity, and beam steering into one for the first time, presenting significant implications for radio communications and radar systems that demand an adaptive antenna beam in certain directions.