A Simple Miniature Ultrawideband Magnetic Field Probe Design for Magnetic Near-Field Measurements

A Simple Miniature Ultrawideband Magnetic Field Probe Design for Magnetic Near-Field Measurements

A simple miniature magnetic-field probe for near-field measurements in 9-kHz-20-GHz bandwidth, which is applied to highspeed circuits, has been proposed and manufactured. The magneticfield probe is built on a four-layer printed circuit board (PCB) using high-performance and low-loss Rogers material...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2016-12, Vol.64 (12), p.5459-5465
Hauptverfasser: Yan, Zhaowen, Wang, Jianwei, Zhang, Wei, Wang, Yansheng, Fan, Jun
Format: Artikel
Sprache:eng
Schlagworte:
Circuit boards
Coax-thru-hole via array
Electric fields
Frequencies
Impedance
Magnetic circuits
Magnetic field measurement
Magnetic fields
Magnetic shielding
Near fields
near-field measurements
Printed circuits
Probes
Resonant frequency
Transmission line measurements
Ultrawideband
ultrawideband magnetic-field probe
via fence
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Beschreibung
Zusammenfassung:A simple miniature magnetic-field probe for near-field measurements in 9-kHz-20-GHz bandwidth, which is applied to highspeed circuits, has been proposed and manufactured. The magneticfield probe is built on a four-layer printed circuit board (PCB) using high-performance and low-loss Rogers material (ε r = 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 |S 21 | rather smooth in the operation band. Experimental results show that the working frequency band is up to 9 kHz-20 GHz.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2016.2606556