This article presents a frequency reconfigurable antenna with loading fluidic switches. The liquid reconfigurable antenna consists of an H‐typed slot antenna and four groups of fluidic switches. The designed H‐typed slot is placed on the backside of the antenna and excited by a straight 50 Ω microstrip line on the front side. As most of the electromagnetic energy is radiated through the slot, the surface currents on the proposed antenna are concentrated on the four branches of the H‐typed slot. Four fluidic switches fabricated by using 3D printing technology are located at the ends of the four branches of the H‐typed slot, aiming to adjust resonant frequency of the antenna. Due to the symmetry of antenna structure, five states can be obtained by loading and unloading liquid distilled water in the fluidic switches, which provides five switching frequencies cover from 3.38 to 3.83 GHz. Advantages such as fast switching speed, low cost, easy fabrication, and high radiation efficiency are achieved by the proposed reconfigurable antenna, making it a good candidate for multifunctional antenna application.

中文翻译：

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带负载水流开关的可重构天线

本文提出了一种带有负载流体开关的频率可重构天线。液体可重配置天线由H型缝隙天线和四组流体开关组成。设计的H型插槽位于天线的背面，并由正面的一条50Ω直条微带线激励。由于大部分电磁能量都是通过缝隙辐射的，因此拟议天线上的表面电流集中在H型缝隙的四个分支上。使用3D打印技术制造的四个流体开关位于H型槽的四个分支的末端，旨在调节天线的谐振频率。由于天线结构的对称性，通过在流体开关中装卸液态蒸馏水可以获得五个状态，它提供了从3.38至3.83 GHz的五个开关频率范围。所提出的可重构天线实现了诸如快速切换速度，低成本，容易制造和高辐射效率的优点，使其成为多功能天线应用的良好候选者。