Scientists from the Institute of Nanotechnology of the Italian National Research Council (CNR) and the Polytechnic University of Pali recently developed a completely transparent graphene antenna. The antenna can operate in the microwave frequency band and is expected to be used in the 5G communications field. The research results were published in Applied Physics Letters. The transparent graphene antenna developed by Italian scientists has electrical conductivity comparable to that of metal conductors, and its sheet resistance value is 18 ohms/square meter. It has been proven through theoretical calculations and experimental measurements that the antenna can operate simultaneously under a wide operating bandwidth (>3.5GHz), achieve relatively high gain, and can simultaneously cover GPS, WiFi, Bluetooth and 5G bands, which enables it to Exchange data at very high speeds. In addition, the graphene antenna's combination of transparency and flexibility also opens up avenues for the development of wearable devices. In the future, it can be directly attached to the surface of the body, or integrated into transparent devices such as smart windows or contact lenses, or even applications. into photovoltaic systems.

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