Optically Transparent Patch Antennas Using Saltwater for WLAN Applications

Nguyen, Tien Dat; Choi, Jung Han; Jung, Chang Won

doi:10.26866/jees.2022.6.r.129

Cited by 5 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All frequency bands mentioned are within the bandwidth obtained for the multilayer bio-inspired FSS structure. In [32] a transparent and flexible patch antenna for Wi-Fi 6E applications is proposed with a measured frequency band of 5.87-7.04 GHz, where it is possible to verify that the proposed FSS structure can be used. In the work presented in [33], a small antenna for use in WLAN and Wi-Fi 6E on a narrow border laptop computer is proposed, for this case it is also possible to use the FSS proposed here.…”

Section: Resultsmentioning

confidence: 99%

A Proposed Frequency Selective Surface (FSS) using Bio-Inspired Element for Wi-Fi 6E Applications

W. Pereira,

J. R. Serres,

K. F. Serres

et al. 2023

JTEC

View full text Add to dashboard Cite

Recently bio-inspired elements with shapes or geometries found in nature have received special attention, both for applications in antennas and in electromagnetic filters, the unit cell of the proposed FSS consists of a modification in a bio-inspired shaped element. A single and multilayered band-stop Frequency Selective Surface (FSS), with polarization independence, is proposed to be used in frequency applications at 6.0 GHz (Wi-Fi 6E). In the industry, Wi-Fi 6E is the name that identifies those Wi-Fi devices that operate in the 6.0 GHz band, designed to improve efficiency and more capacity than previous standards. Band-stop frequency responses for the single and multilayer structures are presented. The simulated frequency responses show bandwidth values for inhibit transmission about of 1.75 GHz and 3.15 GHz, respectively for single and multilayer structures. Furthermore, good agreement between simulated and measured results is shown for the single bio-inspired FSS. The proposed FSS structure presents features that allow its use as an electromagnetic filter or its integration with microstrip antennas developed for applications in the same standard.

show abstract

Section: Resultsmentioning

confidence: 99%

A Proposed Frequency Selective Surface (FSS) using Bio-Inspired Element for Wi-Fi 6E Applications

W. Pereira,

J. R. Serres,

K. F. Serres

et al. 2023

JTEC

View full text Add to dashboard Cite

show abstract

“…In the pursuit of expanding the number of applications of MMAs, numerous researchers have attempted to develop a transparent MMA [19,[27][28][29][30][31][32][33]. The structure of an MMA typically comprises three layers: a conductive resonance layer at the top, an intermediate dielectric layer, and a conductive ground layer at the bottom.…”

Section: Introductionmentioning

confidence: 99%

“…The realization of a transparent MMA involves the integration of a transparent substrate, such as glass or polyethylene terephthalate (PET), with a patterned transparent conductor. Among the various candidates for transparent conductors [29,30,34], indium tin oxide (ITO) and silver (Ag) nanowire composites have been validated. In particular, ITO is favored for its optimal balance of transparency and conductivity [19,27,[31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Optically Transparent Dual-Band Metamaterial Absorber Using Ag Nanowire Screen-Printed Second-Order Cross-Fractal Structures

Bark,

Kim,

Lee

et al. 2024

Fractal Fract

View full text Add to dashboard Cite

In this paper, we propose an optically transparent dual-band metamaterial absorber (MMA) that uses Ag nanowire screen-printed fractal structures. The proposed MMA exhibits near-perfect absorption in the C- and K-bands. This dual-band absorption property is achieved through two inductive–capacitive (L-C) resonances located at 6.45 and 21.14 GHz, which are generated by the second-order fractal structures. We analyzed the microwave absorbing mechanisms through the distributions of the surface current and electromagnetic field on the top and bottom layers. The MMA demonstrates an optical transmittance of 63.1% at a wavelength of 550 nm. This high optical transmittance is attained by screen printing transparent Ag nanowire ink onto a transparent PET substrate. Since screen printing is a simple and low-cost fabrication method, the proposed MMA offers the advantages of being low cost while having the properties of optical transparency and effective dual-band absorption. Consequently, it holds great potential for the radar stealth application of C- and K-bands in that it can be attached to the windows of stealth aircraft due to its optical transparency and dual-band near-perfect absorption property.

show abstract

“…Besides achieving circular polarization by various techniques, patch antennas are generally low-cost, low-profile, easy to manufacture, and they are used in numerous applications such as satellites, radars, GNSS, and wireless networks. However, microstrip patch antennas have relatively narrow impedance and 3-dB axial ratio (AR) bandwidths [4,5].…”

Section: Introductionmentioning

confidence: 99%

A Two-Port Dual-Band Dual-Circularly-Polarized Dielectric Resonator Antenna

Van Trinh,

Trinh-Van,

Lee

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

This paper presents the design of a two-port dual-band dual-circularly-polarized dielectric resonator antenna (DRA). The proposed DRA is formed by stacking two dielectric resonators (DRs) of different shapes, including a hexagonal DR on top and a cross-shaped DR on the bottom. It is designed to resonate at two near-degenerate orthogonal modes of TE111 and TE113, and an aperture-coupled feeding through a cross-like slot is used to achieve dual-band impedance matching simultaneously for right- and left-handed circular polarizations. Tests were conducted on a prototype working in C-band to verify the design concept. The experiment results demonstrate that the proposed DRA has exceptional performance with measured −10 dB reflection bandwidths of 24.4% and 17.4%, 3 dB axial ratio bandwidths of 21.2% and 16.3%, and maximum gains of 5.64 and 8.13 dBic for the lower and upper bands, respectively. Moreover, the measured channel isolation is more than 15.8 dB. The results obtained from the experiments show good agreement with the simulation, and hence, it can be concluded that the proposed DRA is a promising solution that can be used for various wireless communication applications.

show abstract

Optically Transparent Patch Antennas Using Saltwater for WLAN Applications

Cited by 5 publications

References 16 publications

A Proposed Frequency Selective Surface (FSS) using Bio-Inspired Element for Wi-Fi 6E Applications

A Proposed Frequency Selective Surface (FSS) using Bio-Inspired Element for Wi-Fi 6E Applications

Optically Transparent Dual-Band Metamaterial Absorber Using Ag Nanowire Screen-Printed Second-Order Cross-Fractal Structures

A Two-Port Dual-Band Dual-Circularly-Polarized Dielectric Resonator Antenna

Contact Info

Product

Resources

About