摘要
磁共振耦合无线电能传输技术是当前电能传输领域的前沿课题,该技术通过高频磁共振耦合实现电能传输,高频磁场是其实现电能无线传输的媒介。收发线圈间的互感耦合系数直接影响着系统的传输效率和传输距离。空间磁场强度同步检测是准确分析互感耦合系数最直接的方法。高速、宽频带的采样保持器是实现空间高频磁场强度同步检测的关键。从采样保持器的原理出发,详细分析了采样保持器内放大器的不同工作模式和电容的材质对采样保持电路性能的影响,探讨了空间高频磁场信号的特性及其对采样保持器的要求。在此基础上,设计了一种高速采样保值器,并通过实验对其在不同模式下的性能做了详细分析。
Magnetic resonance coupling wireless transmission technology is a topic at the forefront in the field of power transmission .The technology enables power transmission by high-frequency magnetic resonance coupling. High frequency magnetic field is the media of realization of wireless power transmission.Mutual coupling coefficient between coils transceiver affects the transmission efficiency and the transmission distance of the system directly.Space field strength synchronous detection is the most direct way to accurately analyze mutual coupling coefficient.A high-speed,wide-band sample holder is the key to achieving high spatial frequency magnetic field strength synchronous detection.From the principle of the sample holder of ,the paper analyses of the impact of different operating modes and capacitance material within the sample holder to the performance of the sample and hold amplifier circuit in detail.Moreover,the paper discusses the spatial high-frequency magnetic field signal characteristics and requirements of the sample holder.On this basis,we designed a high-speed sample holder.In addition,we analyzed its performance under different experimental models in detail.
出处
《电子测量技术》
2015年第8期13-16,共4页
Electronic Measurement Technology
关键词
采样保持器
跨导放大器
高频磁场
sample ＆amp
hold device
transconductance amplifier
high-frequency magnetic field detection
