Power amplifier power supply circuit and communication device

• Main Authors: QIAN YAO, LI WEINAN, PAN XIAOJUN, ZHOU WEI
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2024
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses a power amplifier power supply circuit and a communication device, relates to the field of communication, and is used for improving the working efficiency of a power device. The power amplifier power supply circuit comprises a first power supply circuit and a second power supply circuit which are connected in parallel, and the first power supply circuit and the second power supply circuit jointly supply power to the power amplifier through the power supply end of the power amplifier; the second power supply circuit is used for adjusting the power supply voltage of the power amplifier at the symbol level; and power supply voltages output by the second power supply circuit and the first power supply circuit are used for changing according to the change of an envelope signal output by the power amplifier. 本申请公开了一种功放供电电路和通信装置，涉及通信领域，用于提升功率器件的工作效率。功放供电电路包括：并联的第一供电电路和第二供电电路，第一供电电路和第二供电电路共同通过功率放大器的供电端为功率放大器供电；第二供电电路用于在符号级调节功率放大器的供电电压；第二供电电路和第一供电电路输出的供电电压用于根据功率放大器输出的包络信号的改变而改变。