Wireless energy transfer enables the remote powering and charging of the myriad of battery-powered devices that have infiltrated our daily lives. With this explosion in the variety and number of mobile devices, wireless power transfer offers the convenience of charging batteries without the annoyance of cumbersome cables and the inconvenience of looking for outlets to “plug in.” Enhancement-mode gallium nitride (eGaN) FETs and ICs are ideal for wireless power applications due to their ability to operate at high frequency, high voltage, and high power.