A High-Efficiency Wideband Frequency-Reconfigurable Water Antenna With a Liquid Control System: Usage for VHF and UHF Applications

Lei Xing; Qian Xu; Jiajia Zhu; Yongjiu Zhao; Saqer Aljaafreh; Chaoyun Song; Yi Huang

doi:10.1109/MAP.2019.2946556

A High-Efficiency Wideband Frequency-Reconfigurable Water Antenna With a Liquid Control System: Usage for VHF and UHF Applications

Lei Xing, Qian Xu, Jiajia Zhu, Yongjiu Zhao, Saqer Aljaafreh, Chaoyun Song, Yi Huang

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

63 Downloads (Pure)

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 × 0.155m × 0.073m 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.

Original language	English
Pages (from-to)	61-70
Number of pages	10
Journal	IEEE Antennas and Propagation Magazine
Volume	63
Issue number	1
Early online date	6 Nov 2019
DOIs	https://doi.org/10.1109/MAP.2019.2946556
Publication status	Published - Feb 2021

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title = "A High-Efficiency Wideband Frequency-Reconfigurable Water Antenna With a Liquid Control System: Usage for VHF and UHF Applications",

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 × 0.155m × 0.073m 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.",

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AU - Aljaafreh, Saqer

AU - Song, Chaoyun

AU - Huang, Yi

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AB - 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 × 0.155m × 0.073m 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.

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