Xing, Lei, Xu, Qian, Zhu, Jiajia, Zhao, Yongjiu, Alja'afreh, Saqer, Song, Chaoyun 
ORCID: 0000-0001-8735-3156 and Huang, Yi ORCID: 0000-0001-7774-1024
(2021)
A High-Efficiency Wideband Frequency-Reconfigurable Water Antenna With a Liquid Control System: Usage for VHF and UHF Applications.
IEEE ANTENNAS AND PROPAGATION MAGAZINE, 63 (1).
pp. 61-70.
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Abstract
A distilled water dielectric resonator antenna (DRA) with a wide frequency-tuning range and high efficiency is presented in this article. It consists of a water resonator and a ground plane with a wideband bowtie feeding slot. The water resonator, having tunable dimensions, is employed to achieve frequency-reconfigurable characteristics. Mechanical switches and a microfluid pump are integrated to control the tuning process. The water DRA, with and without the liquid control system, is designed with a simulation tool and then fabricated and measured to validate the antenna's performance. It is demonstrated that the antenna exhibits high total efficiency (>80%) across a wide frequency-tuning range from 168 to 474 MHz (for S11, -10 dB) with a very compact volume of 278 × 278 × 131 mm3 (0.155λ × 0.155λ × 0.073λ at 168 MHz). Compared with traditional reconfigurable antennas, this design provides a wider frequency-tuning range, a more compact size, and a higher degree of design freedom. It is therefore a promising candidate for very high-frequency (VHF) and ultrahigh-frequency (UHF) applications.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Liquids, Valves, Dipole antennas, Resonant frequency, Control systems, Antenna measurements, Tuning, Wideband, Resonators |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 03 Dec 2019 10:46 |
| Last Modified: | 19 Jan 2023 00:17 |
| DOI: | 10.1109/MAP.2019.2946556 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3064593 |
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