A Novel Long Range Wireless Power Transmission System Using Fresnel Lenses for S-band EM Waves

As energy consumption rapidly increases, there is a need for new and innovative power transmission systems. Wireless Power Transmission (WPT) systems could solve this dilemma, but face limitations due to high energy loss over distance. This project seeks to overcome these challenges by developing a WPT system that transmits energy over distance with minimal loss, using a Phased Array transmitter combined with a novel 3D printed Fresnel Lens. Designed with a high dielectric ABS and consisting of 2 parts, the original Fresnel Lens phase aligns and then collimates EM waves transmitted at 2.4 GHz, allowing for efficient wireless energy transmission. After simulations, a prototype consisting of a Phased Array transmitter, Fresnel Lens, and rectenna receiver was designed and fabricated to test design methodology and efficiency. The novel EM Fresnel lens shows promising results, adding 12 dB gain at 5 m and nearly constant energy in the wireless channel with minimal loss over distance.