A Low-Cost Fluid Switch for Frequency-Reconfigurable Vivaldi Antenna
A Low-Cost Fluid Switch for Frequency-Reconfigurable Vivaldi Antenna
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DOI：
10.1109/lawp.2017.2759580
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发表时间：
2017-01-01
影响因子：
4.2
通讯作者：
Wong, Kai-Kit
中科院分区：
文献类型：
--
作者：
Borda-Fortuny, Cristina;Tong, Kin-Fai;Wong, Kai-Kit
针对工作频带可在两个选定频带之间切换的频率捷变维瓦尔第天线，提出了一种流体开关。对不同浓度的电离溶液进行了研究。选择2mol的KCl溶液作为开关的流体，因为它在电导率、相对介电常数和损耗正切方面具有相对较好的性能。流控可重构Vivaldi天线可以在3.2 GHz和4.5 GHz两个用户定义的工作频段之间良好地工作，两个频段的稳定测量增益均为11 dBi，隔离度为15 dB。这种可重构天线表明，低成本的流体开关可能是可重构天线设计的一种替代装置，提供了更大的灵活性。
A fluid switch is proposed for a frequency-agile Vivaldi antenna whose operating frequency band can be switched between two selected bands. A study of various ionized solutions of different concentrations is performed. A 2 mol KCl solution is selected as the fluid for the switch because of its relatively good properties in conductivity, relative permittivity, and loss tangent. The fluid-switched reconfigurable Vivaldi antenna can function well between two user-defined operating bands: 3.2 and 4.5 GHz with stable measured gain of 11 dBi in both bands and an isolation of 15 dB. This reconfigurable antenna demonstrates that a low-cost fluid switch may be an alternative device for reconfigurable antenna designs providing more flexibility.