A Micro Copper Mesh-Based Optically Transparent Triple-Band Frequency Selective Surface

Sharma, Sameer; Zhou, Degen; Lüttgen, Andrea; Sarris, Costas D.

doi:10.1109/lawp.2018.2886305

Cited by 37 publications

(19 citation statements)

References 20 publications

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“…Many reported works do not use inherently transparent materials. The transparency has been achieved by etching the material (mostly opaque copper sheets) and thus create a mesh structure [46][47][48][49]. Such works have relatively higher isolation but lower transparency levels.…”

Section: B Experimental Performance Evaluationmentioning

confidence: 99%

Polarization Insensitive and Transparent Frequency Selective Surface for Dual Band GSM Shielding

Yang

Salama

et al. 2021

IEEE Trans. Antennas Propagat.

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Section: B Experimental Performance Evaluationmentioning

confidence: 99%

Polarization Insensitive and Transparent Frequency Selective Surface for Dual Band GSM Shielding

Yang

Salama

et al. 2021

IEEE Trans. Antennas Propagat.

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“…However, when the incident angle is varied from 0° to 90°, the 10 dB bandwidth is shifted from 26.4 to 28.5 GHz at 20° in the TE mode and from 26.8 to 29 GHz at 30° in the TM mode. Nevertheless, the angular stability of the proposed absorber is not competitive to other metamaterial absorbers with wider incidence angles [54,55,56] because we focused on the optical transparency in this work. An optical transparent metamaterial absorber with angular stability will be the next work.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Optically Transparent Metamaterial Absorber Using Inkjet Printing Technology

2019

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An optically transparent metamaterial absorber that can be obtained using inkjet printing technology is proposed. In order to make the metamaterial absorber optically transparent, an inkjet printer was used to fabricate a thin conductive loop pattern. The loop pattern had a width of 0.2 mm and was located on the top surface of the metamaterial absorber, and polyethylene terephthalate films were used for fabricating the substrate. An optically transparent conductive indium tin oxide film was introduced in the bottom ground plane. Therefore, the proposed metamaterial absorber was optically transparent. The metamaterial absorber was demonstrated by performing a full-wave electromagnetic simulation and measured in free space. In the simulation, the 90% absorption bandwidth ranged from 26.6 to 28.8 GHz, while the measured 90% absorption bandwidth was 26.8–28.2 GHz. Therefore, it is successfully demonstrated by electromagnetic simulation and measurement results.

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“…Hence, research on optically transparent single layer FSS has become an interesting topic to be explored lately [28][29][30][31][32][33]. Initially, thin-film technique with transparent conductive material, such as indium tin oxide (ITO), silver-coated polyester film (AgHT), and fluorinedoped tin oxide (FTO), were commonly used to obtain high optical transparency for both antenna and FSS.…”

Section: Introductionmentioning

confidence: 99%

“…The meshed metal film is made up of conductor, such as copper or silver, with appropriate grid pattern within the design topology. The meshed technique has been explored widely for both passive [37,38] and active [39] transparent antenna applications, and currently expanded for transparent FSS applications that are insensitive towards angular and polarised variations [32,40]. However, mesh grid size and mesh line width are the two factors that must be considered due to their impact on both the performance and the optical transparency of FSS [40].…”

Section: Introductionmentioning

confidence: 99%

Optically Transparent Tri-Wideband Mosaic Frequency Selective Surface with Low Cross-Polarisation

et al. 2022

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Acquiring an optically transparent feature on the wideband frequency selective surface (FSS), particularly for smart city applications (building window and transportation services) and vehicle windows, is a challenging task. Hence, this study assessed the performance of optically transparent mosaic frequency selective surfaces (MFSS) with a conductive metallic element unit cell that integrated Koch fractal and double hexagonal loop fabricated on a polycarbonate substrate. The opaque and transparent features of the MFSS were studied. While the study on opaque MFSS revealed the advantage of having wideband responses, the study on transparent MFSS was performed to determine the optical transparency application with wideband feature. To comprehend the MFSS design, the evolutionary influence of the unit cell on the performance of MFSS was investigated and discussed thoroughly in this paper. Both the opaque and transparent MFSS yielded wideband bandstop and bandpass responses with low cross-polarisation (−37 dB), whereas the angular stability was limited to only 25°. The transparent MFSS displayed high-level transparency exceeding 70%. Both the simulated and measured performance comparison exhibited good correlation for both opaque and transparent MFSS. The proposed transparent MFSS with wideband frequency response and low cross-polarisation features signified a promising filtering potential in multiple applications.

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A Micro Copper Mesh-Based Optically Transparent Triple-Band Frequency Selective Surface

Cited by 37 publications

References 20 publications

Polarization Insensitive and Transparent Frequency Selective Surface for Dual Band GSM Shielding

Polarization Insensitive and Transparent Frequency Selective Surface for Dual Band GSM Shielding

Optically Transparent Metamaterial Absorber Using Inkjet Printing Technology

Optically Transparent Tri-Wideband Mosaic Frequency Selective Surface with Low Cross-Polarisation

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