A Simple Miniature Ultra-Wide Band Magnetic Field Probe Design for Magnetic Near-Field Measurements

Abstract

A simple miniature magnetic-field probe for near-field measurements in 9 kHz ~ 20 GHz bandwidth, which is applied to high-speed circuits, has been proposed and manufactured. The magnetic-field probe is built on a four-layer printed circuit board (PCB) using high-performance and low-loss Rogers material (εr =3.48 and tan δ =0.0037). Electric field coupling can be suppressed by PCB shielding structure of the magnetic-field probe. Coax-thru-hole via array technique is used to achieve impedance match. The resonance in working frequency band is suppressed through via fence, making |S21| rather smooth in the operation band. Experimental results show that the working frequency band is up to 9 kHz ~ 20 GHz.

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Second Research Center/Lab

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

Electric fields; Fences; Frequency bands; Impedance matching (electric); Magnetic fields; Magnetism; Printed circuit boards; Probes; Reconfigurable hardware; Ultra-wideband (UWB); Electric-field coupling; High speed circuit; Magnetic field probe; Magnetic near-field measurement; Near-field measurement; Printed circuit boards (PCB); Via arrays; Via fence; Magnetic circuits; coax-thru-hole via array; Ultra-wideband magnetic-field probe

International Standard Serial Number (ISSN)

0018-926X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2016

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