Metasurfaced, Broadband, and Circularly Polarized Liquid Antennas Using a Simple Structure

Chaoyun Song, Elliot L. Bennett, Jianliang Xiao, Ahmed Alieldin, Kwai-Man Luk, Yi Huang

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)4907-4913
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number7
Early online date15 Apr 2019
Publication statusPublished - Jul 2019


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