Voltage acquisition circuit

• Main Author: BAO YIPENG
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2024
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to the technical field of power detection, and discloses a voltage acquisition circuit. The voltage acquisition circuit comprises a power amplification circuit, a balun and a series branch, two input ends of the balun are respectively coupled with a pair of differential output ends of the power amplification circuit, a first output end of the balun is coupled with the series branch, and a second output end of the balun is coupled to a fixed level end; the series branch comprises a first capacitor, a second capacitor and a third capacitor which are sequentially connected in series from the first output end to the ground end, and two paths of pseudo-differential voltage signals are obtained through the connection positions of every two capacitors. According to the voltage acquisition circuit, the interference influence of the reference ground can be avoided, and the output voltage signal of the power amplification circuit can be accurately acquired. 本申请涉及功率检测技术领域，公开了一种电压获取电路。该电压获取电路包括功率放大电