Microfluidically Controlled Frequency-Tunable Monopole Antenna for High-Power Applications
Microfluidically Controlled Frequency-Tunable Monopole Antenna for High-Power Applications
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DOI：
10.1109/lawp.2015.2438863
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发表时间：
2016-01-01
影响因子：
4.2
通讯作者：
Mumcu, Gokhan
中科院分区：
文献类型：
--
作者：
Dey, Abhishek;Mumcu, Gokhan
提出了一种具有高射频功率处理能力的微流控频率可调谐微带天线。与以前的工作不同，该频率调谐器是通过在微流体通道内使用可移动的金属化板来实现的。通过12 μ m厚的苯并环丁烯（BCB）绝缘体将微流控器电容耦合到馈电微带线，该绝缘体用于将基于聚二甲基硅氧烷（PDMS）的微流控通道密封并粘合到馈电板基板（RO 4003 C）。结果表明，所提出的可重构的可重构的金属化板，低损耗BCB绝缘体，和RO 4003 C板实现具有200%以上的功率处理能力相比，以前的实施，依赖于液态金属，液晶聚合物，和RO 5880基板。所提出的调谐器提供了在1.7-3.5 GHz范围内的连续调谐，调谐比类似于2：1。通过多物理场模拟和高RF功率激励下进行的实验之间的协议的天线的RF功率处理证明。天线的无液态金属性质以及使用BCB将基于PDMS的微流体通道与印刷电路板基板结合提供了一种实现具有更高效率和高功率处理能力的可重构器件的新方法。
A microfluidically controlled frequency-tunable monopole antenna with high RF power-handling capability is presented. Different than previous work, the frequency tunability of this monopole is achieved by using a movable metallized plate inside a microfluidic channel. The monopole is capacitively coupled to a feeding microstrip line through a 12-mu m-thick benzo-cyclobutene (BCB) insulator that is used to seal and bond the polydimethylsiloxane (PDMS)-based microfluidic channel to the feed board substrate (RO4003C). It is shown that the presented reconfigurable monopole implemented with the metallized plate, low-loss BCB insulator, and RO4003C board exhibits 200% more power-handling capability as compared to prior implementation that relied on liquid metal, liquid crystal polymer, and RO5880 substrate. The presented monopole provides continuous tuning in the 1.7-3.5 GHz range with a tuning ratio of similar to 2 : 1. The RF power handling of the antenna is demonstrated through the agreement between multiphysics simulations and experiments conducted under high RF power excitation. The liquid metal free nature of the antenna and using BCB to bond the PDMS-based microfluidic channels with the printed circuit board substrates offer a new approach for realizing reconfigurable devices with higher efficiency and high power-handling capability.