NDLI: Ultra-low frequency magnetic field probe for field measurements in gradient coils during medical device testing

Content Provider	IET Digital Library
Author	Attaran, A. Wawrzyn, C. M. Handler, W. B. Chronik, B. A.
Abstract	In this Letter ultra-low frequency probes for measuring time-varying magnetic field produced in gradient coils were designed, fabricated, and tested. A 1 cm radius induction loop antenna followed by an instrumentational amplifier with a gain of 40 dB and a cutoff frequency of 30 KHz was designed to measure the magnetic field. The probe was fabricated on a single-sided PCB, FR4 of thickness 1.57 mm and copper of thickness 35 μm was employed in a dB/dt exposure system within a saline phantom using 3D printed waterproofed cover. Simulation and measurement results of the magnetic field were in good agreements.
Starting Page	634
Ending Page	636
Page Count	3
ISSN	00135194
Volume Number	55
e-ISSN	1350911X
Issue Number	Issue 11, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/55/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2019.0204
Journal	Electronics Letters
Publisher Date	2019-05-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3D Printed Waterproofed Cover Amplifiers Biomedical Measurement And Imaging Biomedical Transducers Coils DB-dt Exposure System Electrical Instruments And Technique FR4 Frequency 30 KHz Gain 40.0 DB Gradient Coils Impedance And Admittance Measurement Inductance Measurement Induction Loop Antenna Inductive Sonsor Inductors And Transformer Instrumentation Amplifiers Instrumentational Amplifier Loop Antenna Magnetic Field Measurement Magnetic Sonsor Magnetic Variables Measurement Measurement of Basic Electric And Magnetic Variables Medical Device Testing Patient Diagnostic Method And Instrumentation Printed Circuit Saline Phantom Sensing And Detecting Device Sensing Device And Transducers Single Antenna Single-sided PCB Size 1.57 Mm Size 2 Cm Size 35.0 Mum Three-dimensional Printing Time-varying Magnetic Field Measurement Ultralow Frequency Magnetic Field Probe
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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