Radiation Pattern and Polarization Reconfigurable Antenna Using Dielectric Liquid

Ren, Jian; Zhou, Zhao; Wei, Zhao; Ren, Hao Ming; Chen, Zhe; Liu, Ying; Yin, Ying Zeng

doi:10.1109/tap.2020.2996811

Cited by 71 publications

(26 citation statements)

References 33 publications

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“…One of them was the design of wideband monopole antenna with liquid dielectric in 2006 [15]. In recent years, several models of DRA antennas with a liquid dielectrics and circular polarization have been proposed for wireless applications [16].…”

Section: Introductionmentioning

confidence: 99%

“…So recently research has been done for using liquid dielectric as a reconfigurable antenna based on a micro pump for controlling the water level [28]. In addition, Using suspended nanoparticles (emulsion) by exciting with an external field, in which a special electric field or magnet can be applied to the liquid dielectric [29,30] , and as a result, the polarization of the particles causes a change in the electrical and magnetic conductivity, permittivity and permeability and it can be interesting for future studies [31].…”

Section: Introductionmentioning

confidence: 99%

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WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Ebrahimi

2021

Optik

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─ the lens plays important role in the dielectric resonator antenna (DRA) for increasing the bandwidth and directivity. Also, the liquids like water and ethanol can be noticed for developing the DRA for THz application. In addition, the liquids are interesting because the level and quality of material can be used for designing reconfigurable antenna. For the THz spectrum, the liquids can be combined with antenna and microwave devices by Microfluidic technology. In this paper, the suggested antenna is used to enhance the various factors of the antenna and the filling ratio of the channels is noticed to provide reconfigurable antenna. The slot antenna with split ring resonator and meandered feed is used as the basic antenna to provide high Q-factor. Moreover, the results show that this novel structure can be used as sensor for material detecting which is used to recognize various types of liquids by determining the sensitivity of the sensor in the range of 0.5 to 1 THz. The proposed sensor is examined for pure water, ethanol and gasoline based on the 2 nd order model of Debye.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Ebrahimi

2021

Optik

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“…They soon realized the many advantages of using water to make a DRA: "the dielectric can easily be constrained to the desired shape; there are no airgaps between the probe and the dielectric, or between the dielectric and the conducting plane; when dealing with physically large DRAs at low frequencies, water is a low cost and readily accessible material with a high dielectric constant." Since then, the interest in developing liquid antennas has been growing steadily [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], because it has been gradually realized the potential benefits of the liquid antenna which is not just another DRA, but an antenna may offer what a conventional solid DRA cannot offer.…”

Section: Introductionmentioning

confidence: 99%

Liquid Antennas: Past, Present and Future

Huang

Xing

Song

et al. 2021

IEEE Open J. Antennas Propag.

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The liquid antenna, as a new member of the antenna family, has drawn significant and increasing attention from both academia and industry due to its unique features. In this paper, a comprehensive review on this technology is presented which covers both metallic and non-metallic liquid antennas. Non-metallic liquid antennas are further divided into water-based and non-water-based liquid antennas. We first review and compare different liquid antennas and highlight the major developments in the past. Detailed discussions on state-of-the-art designs and current technical challenges are then presented, and finally the ways forward for the future are suggested. As a special feature, an in-depth review and discussion on materials for liquid antennas are provided which was not well covered in the literature in the past, important properties of selected materials are given in three comparison tables which can serve as antenna material selection references. It is shown that Galinstan is probably the best choice for metallic liquid antennas while ionic liquid materials are the preferred choice for dielectric liquid antennas. The challenges of making the liquid antenna for real-world applications are identified and discussed. It is believed that a liquid antenna implemented in radio systems is probably just around the corner.

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“…NTENNAS composed of various liquids has drawn increasing attention in addition to the conventional metallic antennas [1]. These liquids include ionic liquid [2]- [3], ethyl acetate solution [4]- [5], pure water [6], etc. Among these liquids, water shows unique characteristics and advantages such as low material cost, easy accessibility, eco-friendly, large dielectric constant, highly optical transparency, etc.…”

Section: Introductionmentioning

confidence: 99%

A Fully Transparent Wideband Water Patch Antenna With L-Shaped Feed

Sun

Luk

2021

IEEE Open J. Antennas Propag.

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A wideband and fully optically-transparent water patch antenna is proposed. Both the patch and the ground plane are made of distilled water. Different from the previous water patch antennas, this proposed design features the utilization of an L-shaped distilled water probe as the feed structure. Thus, substantial improvement in the transparency is achieved. To excite the water patch antenna, a short inner probe of a coaxial cable is inserted into the water probe. The electromagnetic (EM) waves excited by the inner probe can propagate along the L-shaped water probe and also resonant in the middle substrate (air) under the water patch, causing radiation into the free space. The L-shaped water probe can significantly improve the impedance bandwidth, which has the same function as the reported L-shaped metallic probe. The results show that the proposed water patch antenna has a wide impedance bandwidth of 42.6% (from 1.48 to 2.28 GHz with |S11| < -10 dB), a gain up to 7.5 dBi, a radiation efficiency up to 67% and broadside radiation pattern across the bandwidth. In addition, some parametric studies on the distilled water probe have been carried out for the design purpose. The proposed water patch antenna has confirmed the possibility of designing a patch antenna fully made of liquid or solid dielectric materials with high dielectric constant such as water, instead of using metal.

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Radiation Pattern and Polarization Reconfigurable Antenna Using Dielectric Liquid

Cited by 71 publications

References 33 publications

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Liquid Antennas: Past, Present and Future

A Fully Transparent Wideband Water Patch Antenna With L-Shaped Feed

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