Metasurfaced, Broadband, and Circularly Polarized Liquid Antennas Using a Simple Structure
Metasurfaced, Broadband, and Circularly Polarized Liquid Antennas Using a Simple Structure
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DOI：
10.1109/tap.2019.2911332
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发表时间：
2019-04
影响因子：
5.7
通讯作者：
Chaoyun Song;E. L. Bennett;Jianliang Xiao;Ahmed Alieldin;K. Luk;Yi Huang
中科院分区：
文献类型：
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作者：
Chaoyun Song;E. L. Bennett;Jianliang Xiao;Ahmed Alieldin;K. Luk;Yi Huang
本文首次提出了一种基于有机离子液体谐振器的宽带圆极化天线。该天线通过在液体中插入一种新的馈电结构来激励，该结构相对简单，但显著提高了传统单探针馈电介质谐振器天线（DRA）的带宽和CP性能。所提出的液体天线加载有元表面（MS），以进一步改善阻抗匹配和CP特性。所提出的天线的一个设计实例显示了一个相对较宽的分数阻抗带宽和CP带宽的51.4%和34.2%，分别。此外，与具有类似性能的传统DRA相比，所提出的液体DRA具有降低的结构复杂性和紧凑的尺寸。本文中提出的设计方法可以进一步用于一系列新的液体介质设计，并扩展了这种天线的设计自由度和灵活性，这可能对使用新液体材料的未来天线设计产生重大影响。
A novel broadband circularly polarized (CP) antenna using organic ionic liquid resonators is presented in this communication for the first time. The antenna is excited by inserting a new feeding structure into the liquid which is relatively simple but significantly improves the bandwidth and CP performance of traditional single probe-fed dielectric resonator antennas (DRAs). The proposed liquid antenna is loaded with a metasurface (MS) to further improve the impedance matching and CP characteristics. A design example of the proposed antenna shows a relatively wide fractional impedance bandwidth and CP bandwidth of 51.4% and 34.2%, respectively. In addition, the proposed liquid DRA has a reduced structural complexity and a compact size compared with the conventional DRAs with a similar performance. The design methodology presented in this communication can be further exploited for a range of new liquid DRA designs and expand the design freedom and flexibility of such antennas which may have significant implications in future antenna designs using the new liquid materials.