Design considerations for biphasic pulsed field generators used in portable magnetic sensor systems

Neelam Prabhu-Gaunkar, N. R. Bouda, W. Theh, M. Mina
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Abstract

Pulsed magnetic field generator systems are an integral part of several portable magnetic sensor systems. In this work design of field generators for portable magnetic resonance systems will be discussed. Generally, commercial field generator systems with sophisticated data acquisition and processing mechanisms are used for magnetic resonance applications. However, with the move towards portable diagnostics, a redesign of the pulsed field generator systems for improved portability is appropriate. Here, the design of different portable pulsed magnetic field generators are contrasted in purview of portable single-sided nuclear magnetic resonance (NMR) applications. The field generators rely on switching of inductors in the MHz frequency range and can consume varied amounts of currents on the basis of the switching device's bias conditions. The extension to biphasic operations will prove to be beneficial in terms of obtaining higher signal to noise ratio (SNR) and larger pulsed fields, essential parameters in most magnetic resonance measurements.
便携式磁传感器系统中双相脉冲场发生器的设计考虑
脉冲磁场发生器系统是一些便携式磁传感器系统的组成部分。本文讨论了便携式磁共振系统磁场发生器的设计。一般来说,具有复杂数据采集和处理机制的商用磁场发生器系统用于磁共振应用。然而,随着便携式诊断的发展,重新设计脉冲场发生器系统以提高便携性是合适的。本文从便携式单面核磁共振(NMR)应用的角度,对比了不同便携式脉冲磁场发生器的设计。磁场发生器依赖于在MHz频率范围内的电感开关,并且可以根据开关设备的偏置条件消耗不同数量的电流。扩展到双相操作将被证明在获得更高的信噪比(SNR)和更大的脉冲场方面是有益的,这是大多数磁共振测量的基本参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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