radio frequency harvesting

Radio frequency (RF) harvesting is a technology that captures ambient radio signals—like Wi-Fi, cellular, or broadcast transmissions—and converts them into electrical energy. This process uses specialized circuits called antennas and rectifiers to absorb RF energy, which is then transformed into usable power to charge small devices or sensors. It enables devices to operate wirelessly without batteries by scavenging energy from existing wireless signals in the environment. RF harvesting is increasingly used for powering remote sensors, wearables, and IoT devices, promoting sustainable and maintenance-free energy solutions.