| 高频磁场检测中采样保持器的设计及其性能分析 |
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| 引用本文： | 吕富勇,周瑞卿,阮世阳,赵嘉敏,唐迎川,李鹏生.高频磁场检测中采样保持器的设计及其性能分析[J].电子测量技术,2015,38(8):13-16. |
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| 作者姓名： | 吕富勇 周瑞卿 阮世阳 赵嘉敏 唐迎川 李鹏生 |
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| 作者单位： | 南京信息工程大学信息与控制学院南京210044,南京信息工程大学信息与控制学院南京210044,南京信息工程大学信息与控制学院南京210044,南京信息工程大学信息与控制学院南京210044,南京信息工程大学信息与控制学院南京210044,南京信息工程大学信息与控制学院南京210044 |
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| 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。
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| 关 键 词： | 采样保持器 跨导放大器 高频磁场 |
Design and performance analysis of a sample holder in the detection of high frequency magnetic field |
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| Lv Fuyong,Zhou Ruiqing,Ruan Shiyang,Zhao Jiamin,Tang Yingchuan and Li Pengsheng.Design and performance analysis of a sample holder in the detection of high frequency magnetic field[J].Electronic Measurement Technology,2015,38(8):13-16. |
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| Authors: | Lv Fuyong Zhou Ruiqing Ruan Shiyang Zhao Jiamin Tang Yingchuan and Li Pengsheng |
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| Affiliation: | College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China,College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China,College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China,College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China,College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China and College of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044 , China |
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| Abstract: | 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. |
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| Keywords: | sample & hold device transconductance amplifier high frequency magnetic field detection |
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