Optical Control of Reconfigurable Antennas and Application to a Novel Pattern-Reconfigurable Planar Design
Optical Control of Reconfigurable Antennas and Application to a Novel Pattern-Reconfigurable Planar Design
复制标题
DOI：
10.1109/jlt.2014.2321406
复制
发表时间：
2014-10
影响因子：
4.7
通讯作者：
D. Patron;A. Daryoush;K. Dandekar
中科院分区：
文献类型：
--
作者：
D. Patron;A. Daryoush;K. Dandekar
本文讨论了利用商用设备对可重构天线进行光控制的技术。这些技术被应用于一种模式可重构平面天线，该天线集成了光学控制电路来切换布置在每个象限中的折叠微带散热器。通过在微带元件之间的切换，所设计的天线可以产生单一的全向或四个方向的模式，在2.4 GHz WiFi频段内保持良好的阻抗匹配。我们研究了两种可能的光控制策略：1)基于p-i-n光电检测器的开关，以及2)光电晶体管控制的RF p-i-n二极管开关。对后一种技术进行了扩展的数值和实验分析，讨论了作为可重构天线射频开关的优点和局限性。最后，收集了输入阻抗和辐射方向图的测量数据来验证所提出的光控天线设计，并与标准电子控制进行了比较。
This paper discusses techniques for optical control of reconfigurable antennas using commercially available devices. These techniques are applied to a pattern-reconfigurable planar antenna that integrates optical control circuitry to switch folded microstrip radiators arranged in each of the quadrants. By switching between the microstrip elements, the designed antenna can generate a single omnidirectional or four directional patterns, maintaining good impedance matching within the 2.4 GHz WiFi band. We investigated two possible strategies for optical control: 1) p-i-n photodectors based switching, and 2) phototransistor controlled RF p-i-n diodes switches. Extended numerical and experimental analysis was carried out for the latter technique, discussing advantages and limitations when employed as RF switch on reconfigurable antennas. Finally, measurements of input impedance and radiation patterns were collected to validate the proposed optically controlled antenna design and compared to standard electronic control.