Wireless energy harvester from 700–900 MHz

A broadband rectenna with a fractional bandwidth of over 25% was herein designed and validated. The operational frequencies span from 700 MHz to 900 MHz using an offset tapered dipole and wideband rectenna. This compact design can provide up to 64.3% RF-to-DC conversion efficiency, and can rectify efficiently with power densities as low as 1 μW/cm
²
.