Power supply circuit, processing circuit, and wireless communication system

The embodiment of the invention provides a power supply circuit, a processing circuit and a wireless communication system, relates to the technical field of communication equipment, and can improve the emission efficiency of PA. The wireless communication system comprises a processing circuit, at least one linear amplification circuit, a switch amplification circuit, at least one first filter capacitor and at least one power amplifier, wherein the output end of the switch amplification circuit, the output end of the linear amplification circuit and the power supply end of the power amplifier are coupled to a first node, and the first filter capacitor is coupled to the input end of the linear amplification circuit or the output end of the linear amplification circuit. 本申请实施例提供一种供电电路、处理电路及无线通信系统，涉及通讯设备技术领域，能够提高PA的发射效率。该无线通信系统，包括：处理电路、至少一个线性放大电路、开关放大电路、至少一个第一滤波电容、以及至少一个功率放大器；其中，开关放大电路的输出端、线性放大电路的输出端、以及功率放大器的电源端耦合于第一节点，第一滤波电容耦合于线性放大电路的输入端或线性放大电路的输出端。