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用于巨磁阻抗（GMI）磁传感器的高频幅度检测器。

High frequency amplitude detector for GMI magnetic sensors.

作者信息

Asfour Aktham, Zidi Manel, Yonnet Jean-Paul

机构信息

University Grenoble-Alpes, G2Elab, F-38000 Grenoble, France.

出版信息

Sensors (Basel). 2014 Dec 19;14(12):24502-22. doi: 10.3390/s141224502.

DOI:10.3390/s141224502
PMID:25536003
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4299123/
Abstract

A new concept of a high-frequency amplitude detector and demodulator for Giant-Magneto-Impedance (GMI) sensors is presented. This concept combines a half wave rectifier, with outstanding capabilities and high speed, and a feedback approach that ensures the amplitude detection with easily adjustable gain. The developed detector is capable of measuring high-frequency and very low amplitude signals without the use of diode-based active rectifiers or analog multipliers. The performances of this detector are addressed throughout the paper. The full circuitry of the design is given, together with a comprehensive theoretical study of the concept and experimental validation. The detector has been used for the amplitude measurement of both single frequency and pulsed signals and for the demodulation of amplitude-modulated signals. It has also been successfully integrated in a GMI sensor prototype. Magnetic field and electrical current measurements in open- and closed-loop of this sensor have also been conducted.

摘要

提出了一种用于巨磁阻抗（GMI）传感器的高频幅度检测器和解调器的新概念。该概念将具有出色性能和高速的半波整流器与确保幅度检测且增益易于调节的反馈方法相结合。所开发的检测器能够在不使用基于二极管的有源整流器或模拟乘法器的情况下测量高频和极低幅度的信号。本文通篇阐述了该检测器的性能。给出了设计的完整电路，以及对该概念的全面理论研究和实验验证。该检测器已用于单频和脉冲信号的幅度测量以及调幅信号的解调。它还已成功集成到一个GMI传感器原型中。还对该传感器在开环和闭环中的磁场和电流测量进行了研究。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/2177915885b7/sensors-14-24502f15.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/4a92076fc5fe/sensors-14-24502f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/1880bb820df7/sensors-14-24502f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/3643d4aa4e2e/sensors-14-24502f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/e23730b0fd7f/sensors-14-24502f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/404c908bb5d2/sensors-14-24502f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/2f2babaa2739/sensors-14-24502f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/3a970edf8943/sensors-14-24502f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/cf2926dae4af/sensors-14-24502f8a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/032a31fe18f6/sensors-14-24502f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/77908beb7202/sensors-14-24502f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/ec9671b00c81/sensors-14-24502f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/b5203c2793f2/sensors-14-24502f12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/cdc4e4acfc78/sensors-14-24502f13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/40ceee8a539e/sensors-14-24502f14a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/2177915885b7/sensors-14-24502f15.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/4a92076fc5fe/sensors-14-24502f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/1880bb820df7/sensors-14-24502f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/3643d4aa4e2e/sensors-14-24502f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/e23730b0fd7f/sensors-14-24502f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/404c908bb5d2/sensors-14-24502f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/2f2babaa2739/sensors-14-24502f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/3a970edf8943/sensors-14-24502f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/cf2926dae4af/sensors-14-24502f8a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/032a31fe18f6/sensors-14-24502f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/77908beb7202/sensors-14-24502f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/ec9671b00c81/sensors-14-24502f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/b5203c2793f2/sensors-14-24502f12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/cdc4e4acfc78/sensors-14-24502f13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/40ceee8a539e/sensors-14-24502f14a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e19d/4299123/2177915885b7/sensors-14-24502f15.jpg

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