MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202631110432 A) filed by Indian Institute Of Technology Guwahati on September 15, 2026, for System And Method For Hybrid Solar And Microwave Energy-Based Charging Of Unmanned Aerial Vehicles.

Inventors include Amarnath Kumar; Chayanika Baishya; Shashank Satish Kulkarni; Sisir Kumar Nayak; and D. Senthil Kumar.

The application for the patent was published on October 23, 2026, under issue no. 43/2026.

Abstract: The present invention relates to a system and method for hybrid solar and microwave energy-based charging of Unmanned Aerial Vehicles (UAV). The present invention aims to combine the solar photovoltaic energy and microwave energy to produce a reliable direct current source for UAVs. The system mainly includes a photovoltaic (PV) array, a patch type radio frequency antenna in connection with a RF-to-DC converter, a battery management system, and a rechargeable battery. The PV array converts the captured sunlight into DC output, the patch type RF antenna captures microwave energy radiated from external source, and converts the captured microwave energy into DC output using RF-to-DC converter. The battery management system combines the DC outputs of PV array, and RF-to-DC converter, and supply the combined DC power to the rechargeable battery. With combination of two different renewable power sources, the present invention facilitates dependable and reliable energy supply, particularly to be useful in locations not having direct access to the power grid or wireless power systems.

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