A Compact Low-Cost Wideband Shielded-Loop Probe With Enhanced Performance for Magnetic Near-Field Measurements
- Authors
- Bang, Jihoon; Park, Yuntae; Jung, Kibum; Choi, Jaehoon
- Issue Date
- Oct-2020
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Probes; Magnetic noise; Magnetic shielding; Magnetic circuits; Sensitivity; Magnetic resonance; Equivalent circuits; Electromagnetic interference (EMI); near-field measurement; planar shielded-loop probe; performance improvement; wideband magnetic-field probe
- Citation
- IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, v.62, no.5, pp.1921 - 1928
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
- Volume
- 62
- Number
- 5
- Start Page
- 1921
- End Page
- 1928
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/8890
- DOI
- 10.1109/TEMC.2019.2946714
- ISSN
- 0018-9375
- Abstract
- In this article, a compact low-cost wideband planar shielded-loop probe with enhanced performance is proposed for magnetic near-field measurements. The probe is designed based on a stripline structure and fabricated on an FR4 printed circuit board with a four-layer stack-up structure. In the proposed design, an inverted G-shaped inductive folded line is arranged on an added layer to increase the sensitivity to the magnetic field response. The sensitivity, in terms of |S-21|, of the proposed magnetic near-field probe is improved relative to the conventional shielded-loop by an average of 5 dB over the frequency band ranging from 100 MHz to 6 GHz. Also, two additional techniques to enhance the electric field suppression capability of the planar shielded-loop probe are presented: repositioning the short via hole and mounting a metal can on the probe.
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