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http://dx.doi.org/10.5762/KAIS.2021.22.3.492

High Transparent Planar Dipole Antenna using Ionized Salt-water of ASA Structure  

Phan, Duy Tung (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
Jung, Chang Won (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.3, 2021 , pp. 492-498 More about this Journal
Abstract
This feasibility study evaluated an optically transparent planar antenna using liquid salt-water as the conducting material. The most significant reason behind using liquid salt-water for transparent antenna applications is its excellent average optical transparency (OTav) (> 95% at a salinity of 40 ppt) compared to other typical solid transparent thin-film electrodes, such as indium tin oxide (ITO:> 73%) or multi-layer films (MLF: > 78%). Each conductive arm of the proposed dipole is constructed from a salt-water layer held between two clear planar acrylic layers (��r = 2.61, tan�� = 0.01, OTav > 90%) (acrylic/salt-water/acrylic; ASA) due to surface tension. To examine the electrical and optical properties of the ASA structure, the surface tension was measured to determine the thickness of the salt-water layer that finalized its sheet resistance and OTav. The average gain and efficiency of the antenna were 1.72 dBi and 74%, respectively, in the operating UHF (Ultra high frequency) band (470-771 MHz). Therefore, the proposed antenna can be a good candidate for applications as a transparent planar antenna using salt-water.
Keywords
Transparent antenna; Salt-water; Dipole; Surface tension; Optical transparency;
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