Ultra-low power multi-stage AC logic family

The invention relates to an ultra-low power multi-stage AC logic family. A set of AC logic circuits may be powered by AC signals to conserve power in the microchip. The logic circuit uses relative phases of different AC signals and load capacitance to perform digital logic operations in different phases of the AC signals. One stage is used for charging a load capacitor, and the other stage is used for discharging the capacitor; some of the phases may be only a holding phase that holds a value of the signal. The charging and discharging phases are enabled depending on the input signal of the digital function to be implemented and the corresponding expected output. The circuit may be used in a wireless power supply device having a small number of gates to save power loss associated with DC rectification. The present invention relates to a gate circuit that can be used to execute any type of combination gates, such as NAND, NOR, XOR, and can also be used to execute sequential circuits, such as D flip-flops. 本申请案