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The Low-Attenuation Endfire Leaky-Wave State on an Optically Transparent Lossy Film

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摘要 The development of high-performance optically transparent radio frequency(RF)radiators is limited by the intrinsic loss issue of transparent conductive films(TCFs).Instead of pursuing expensive endeavors to improve the TCFs'electrical properties,this study introduces an innovative approach that leverages leaky-wave mode manipulation to mitigate the TCFs'attenuating effect and maximize the RF radiation.Our finding reveals that the precise control of the mode confinement on glass-coated TCFs can create a low-attenuation window for leaky-wave propagation,where the total attenuation caused by TCF dissipation and wave leakage is effectively reduced.The observed low-attenuation leaky-wave state on lossy TCFs originates from the delicate balance between wave leakage and TCF dissipation,attained at a particular glass cladding thickness.By leveraging the substantially extended radiation aperture achieved under suppressed wave attenuation,this study develops an optically transparent antenna with an enhanced endfire realized gain exceeding 15 dBi and a radiation efficiency of 66%,which is validated to offer competitive transmission performance for advancing ubiquitous wireless communication and sensing applications.
出处 《Engineering》 CSCD 2024年第12期72-80,共9页 工程(英文)
基金 the support partially from the National Natural Science Foundation of China(62301162,62401386,62071125,62071187,62022045,and U22B2016) partially from the Industry–Education Cooperation Project of Fujian Province(#2022H6018) partially from the Fujian Provincial Natural Science Foundation of China(2023J01058) partially from the National Key Research and Development Program of China(2021YFA0716601 and 2022YFE0115500) partially from the Startup Funding of Fuzhou University(XRC-23007)。
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