How RF Charging Works
Radio frequency (RF) wireless charging technology is unique in that it uses electronic waves or radio frequencies vs. magnetic fields to charge a device. An RF transmitter transmits RF waves and a receiver embedded within a device picks them up, converts them into electricity, and powers the device. RF can power devices at a distance ranging from a few centimeters to a few meters.
There are two main categories of RF wireless charging: Near Field and Far Field
- Far Field emits electronic waves and the transmitter (similar to a wifi router) locates the RF receiver in a defined area. As long as the device stays in that area, it charges, but it is limited on charging capacity (as some energy is lost).
- Near-Field allows any 3D item – from a cup holder to a drawer or a box – to become a transmitter/charging station. It allows for full charging (from 0-100%) and greater spatial freedom – giving users a true “drop and charge” experience.