Shunt-Excited Sea-Water Monopole Antenna of High Efficiency

Hua, Changzhou; Shen, Zhongxiang

doi:10.1109/tap.2015.2477418

Cited by 45 publications

(34 citation statements)

References 6 publications

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“…For a liquid dielectric reconfiguable antenna, switching speed primarily depends on the method used to obtain different liquid dielectric volume (height, type) and in most of the works it is done manually with a measuring tool like a syringe (when the method is not mentioned it is assumed to be manual). Some authors used micro-pumps [46,47,51,52,80,82,87,90,93,94] and only one group demonstrated a closed loop system with a microcontroller and a mirco-pump [52]. Only these few papers mentioned the switching speed of their proposed reconfigurable antennas [80,87,92].…”

Section: Discussionmentioning

confidence: 99%

“…In Reference [51], a water-based monopole antenna was fed through a conducting ring with one side connected to the ground plane and the other side connected to a Γ-shape feeding arm. This design allows the incorporation of a matching network which can be tuned to obtain a good reflection coefficient.…”

Section: Feeding Technique Variationsmentioning

confidence: 99%

“…It also means that a dynamic type antennas can be realized. For example, in Reference [51], a shunt excited monopole antenna was positioned vertically on the sea surface and the bottom end of the cylinder was connected to a water pump. When the pump was on, it would take the sea water, guide it through the cylinder, and thus activate the antenna.…”

Section: Static Vs Dynamicmentioning

confidence: 99%

“…Monopole antenna with different feeding probes. (a)[46], (b)[47][48][49], (c)[50], (d)[51,52], (e)[53].…”

mentioning

confidence: 99%

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A Review on Reconfigurable Liquid Dielectric Antennas

Motovilova

Huang

2020

Materials

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The advancements in wireless communication impose a growing range of demands on the antennas performance, requiring multiple functionalities to be present in a single device. To satisfy these different application needs within a limited space, reconfigurable antennas are often used which are able to switch between a number of states, providing multiple functions using a single antenna. Electronic switching components, such as PIN diodes, radio-frequency micromechanical systems (RF-MEMS), and varactors, are typically used to achieve antenna reconfiguration. However, some of these approaches have certain limitations, such as narrow bandwidth, complex biasing circuitry, and high activation voltages. In recent years, an alternative approach using liquid dielectric materials for antenna reconfiguration has drawn significant attention. The intrinsic conformability of liquid dielectric materials allows us to realize antennas with desired reconfigurations with different physical constraints while maintaining high radiation efficiency. The purpose of this review is to summarize different approaches proposed in the literature for the liquid dielectric reconfigurable antennas. It facilitates the understanding of the advantages and limitations of this technology, and it helps to draw general design principals for the development of reconfigurable antennas in this category.

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Section: Discussionmentioning

confidence: 99%

Section: Feeding Technique Variationsmentioning

confidence: 99%

Section: Static Vs Dynamicmentioning

confidence: 99%

“…Monopole antenna with different feeding probes. (a)[46], (b)[47][48][49], (c)[50], (d)[51,52], (e)[53].…”

mentioning

confidence: 99%

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A Review on Reconfigurable Liquid Dielectric Antennas

Motovilova

Huang

2020

Materials

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“…Water, as one of the most accessible materials in nature, has been widely investigated in EM areas as its advantages of low cost, environmental friendly, and easy available. It has been widely used in the design of different microwave antennas, such as monopole antenna [29], reconfigurable antenna [30] and dielectric patch antennas [31,32]. Recently, water has also become a hot spot in the design of all-dielectric metamaterials [33][34][35], which can support electric or/and magnetic resonance through properly tailoring the shape or orientation of dielectric resonators.…”

Section: Introductionmentioning

confidence: 99%

Cylindrical-water-resonator-based ultra-broadband microwave absorber

Ren

Yin

2018

Opt. Mater. Express

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A cylindrical-water-resonator-based absorber with ultra-broad operating band at microwave band is demonstrated theoretically and experimentally for the first time. By utilizing dielectric resonator (DR) mode and spoof surface plasmon polariton (SPP) mode of the cylindrical water resonators, the proposed absorber owns an absorptivity higher than 90% over almost the whole ultra-broad operating band from 5.58 GHZ to 24.21 GHz, with a relative bandwidth as high as 125%. The angular tolerance and thermal stability of the proposed absorber are simulated and the results indicate the good performance of the absorber under wide incident angles and weakly dependent on water temperature. Low cost, ultra-broad operating band, good wide-angle characteristic and thermal stability make the absorber promising in the application of antenna measurement, steady technology and energy harvesting.

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Liquid Antennas

Zou

Hua

et al. 2016

Wiley Encyclopedia of Electrical and Electronics Engineering

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A brief overview of recent activities in the area of liquid antennas has been provided in this article. This article is organized as follows. Section 2 describes the details of the electrical properties of liquids. In Section 3, liquid antennas based on pure water as a dielectric material are introduced. The development of liquid metal antenna is described in Section 4. Section 5 focuses on the design and characterization of seawater antennas. Section 6 concludes the article by suggesting topics for further studies.

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Shunt-Excited Sea-Water Monopole Antenna of High Efficiency

Cited by 45 publications

References 6 publications

A Review on Reconfigurable Liquid Dielectric Antennas

A Review on Reconfigurable Liquid Dielectric Antennas

Cylindrical-water-resonator-based ultra-broadband microwave absorber

Liquid Antennas

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