摘要
FAIMS系统中最基础的部分为高场非对称射频电源,它提供电压差让离子在迁移区中实现有效的分离。通过半桥逆变的原理产生RF方波,设计一种三桥臂的方波产生电路,减小了通过高压直流电源的电流,从而有效减小了系统的功率。考虑FAIMS芯片的复杂性和仪器的便携性,改进差分式射频工作模式,有效降低了FAIMS对高压直流电源的输入要求,有利于高压直流电源的简化和功耗的降低,进而有利于FAIMS的小型化应用。结合补偿电压自动扫描,研制出优化后的高场非对称方波射频电源,通过实验对比,满足FAIMS迁移区的工作要求。
The most basic part of FAIMS system is the high field asymmetric RF power supply,which provides voltage difference for the effective separation of ions in the migration region.The principle of half bridge inverter is used to generate RF square wave.A three leg square wave generator is designed to reduce the current flowing through the high voltage DC power supply.So the power of the system is reduced effectively.Considering the complexity of FAIMS chip and the portability of the instrument,the differential RF mode is improved,which effectively reduces the input requirements of FAIMS for the high voltage DC power supply and is beneficial to the high voltage DC power supply.It is beneficial to simplify the high-voltage DC power supply and reduce the power consumption,which is conducive to the miniaturization of FAIMS.Combined with automatic scanning of compensation voltage,the optimized high field asymmetric rectangular waveform RF power supply is developed.Through experimental comparison,it meets the requirements of FAIMS migration area.
作者
钟伦超
石文艳
周金力
游占华
龚涛
Zhong Lunchao;Shi Wenyan;Zhou Jinli;You Zhanhua;Gong Tao(Tsinghua Shenzhen International Graduate School,Shenzhen 518055,China;Technical Center of China Petroleum Logging Co.,Ltd.,Xi′an 710077,China;Institute of Intelligent Manufacturing Technology,Shenzhen Polytechnic,Shenzhen 518055,China)
出处
《电子测量技术》
北大核心
2021年第7期144-148,共5页
Electronic Measurement Technology
基金
深圳市科技计划基础研究自由探索项目(JCYJ20180306174135470)资助
关键词
FAIMS
高场非对称射频电源
脉冲变压器
半桥逆变
补偿电压
FAIMS
high field asymmetric RF power supply
pulse-transformer
half-bridge inverter
compensation voltage
