{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T21:13:51Z","timestamp":1779916431369,"version":"3.53.1"},"reference-count":33,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T00:00:00Z","timestamp":1692576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004488","name":"Croatian Science Foundation","doi-asserted-by":"publisher","award":["IP-2020-02-2369"],"award-info":[{"award-number":["IP-2020-02-2369"]}],"id":[{"id":"10.13039\/501100004488","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004488","name":"Croatian Science Foundation","doi-asserted-by":"publisher","award":["DOK-2021-02-9723"],"award-info":[{"award-number":["DOK-2021-02-9723"]}],"id":[{"id":"10.13039\/501100004488","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Young researchers\u2019 career development","award":["IP-2020-02-2369"],"award-info":[{"award-number":["IP-2020-02-2369"]}]},{"name":"Young researchers\u2019 career development","award":["DOK-2021-02-9723"],"award-info":[{"award-number":["DOK-2021-02-9723"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper proposes a novel design of shielded two-turn near-field probe with focus on high sensitivity and high electric field suppression. A comparison of different two-turn loop topologies and their influence on the probe sensitivity in the frequency range up to 3 GHz is presented. Furthermore, a comparison between a single loop probe and a two-turn probe is given and different topologies of the two-turn probe are analyzed and evaluated. The proposed probes were simulated using Ansys HFSS and manufactured on a standard FR4 substrate four-layer printed circuit board (PCB). A measurement setup for determining probe sensitivity and electric field suppression ratio using an in-house made PCB probe stand, vector network analyzer, microstrip line (MSL) and the manufactured probe is presented. It is shown that using a two-turn probe design it is possible to increase the probe sensitivity while minimizing the influence on the probe spatial resolution. The average sensitivity of the proposed two-turn probe compared to the conventional design is increased by 10.1 dB in the frequency range from 10 MHz up to 1 GHz.<\/jats:p>","DOI":"10.3390\/s23167308","type":"journal-article","created":{"date-parts":[[2023,8,22]],"date-time":"2023-08-22T00:46:22Z","timestamp":1692665182000},"page":"7308","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["A Two-Turn Shielded-Loop Magnetic Near-Field PCB Probe for Frequencies up to 3 GHz"],"prefix":"10.3390","volume":"23","author":[{"given":"Mario","family":"Filipa\u0161i\u0107","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering Fundamentals and Measurements, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7446-0024","authenticated-orcid":false,"given":"Martin","family":"Dadi\u0107","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering Fundamentals and Measurements, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1921","DOI":"10.1109\/TEMC.2019.2946714","article-title":"A Compact Low-Cost Wideband Shielded-Loop Probe with Enhanced Performance for Magnetic Near-Field Measurements","volume":"62","author":"Bang","year":"2020","journal-title":"IEEE Trans. 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Antennas Propag."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"514","DOI":"10.1109\/TIM.2004.823297","article-title":"Analysis of the Common-Mode Rejection in the Measurement and Generation of Magnetic Fields Using Loop Probes","volume":"53","author":"Carobbi","year":"2004","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Filipa\u0161i\u0107, M., and Dadi\u0107, M. (2023, January 24\u201328). A Shielded PCB Probe Optimized for Magnetic Near Field Measurements below 3 GHz. Proceedings of the 2023 4th International Conference on Smart Grid Metrology (SMAGRIMET), Cavtat, Croatia.","DOI":"10.1109\/SMAGRIMET58412.2023.10128658"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"3012","DOI":"10.1109\/TIM.2018.2869181","article-title":"A High-Frequency and High Spatial Resolution Probe Design for EMI Prediction","volume":"68","author":"Yang","year":"2019","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"991","DOI":"10.1109\/TEMC.2013.2248011","article-title":"A magnetic-field resonant probe with enhanced sensitivity for RF interference applications","volume":"55","author":"Chuang","year":"2013","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Lu, Y., Wen, L., Gu, C., Wu, L.S., and Mao, J.F. (2022, January 16\u201319). A High-Sensitivity Magnetic-Field Resonant Probe Based on Embedded Stripline Structure. Proceedings of the 2022 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNeT), Las Vegas, NV, USA.","DOI":"10.1109\/WiSNet53095.2022.9721368"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"331","DOI":"10.1109\/TEMC.2015.2508898","article-title":"A Frequency Tunable High Sensitivity H-Field Probe Using Varactor Diodes and Parasitic Inductance","volume":"58","author":"Shinde","year":"2016","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Tsutagaya, H., and Kazama, S. (2008, January 18\u201322). A High Sensitivity Electromagnetic Field Sensor Using Resonance. Proceedings of the 2008 IEEE International Symposium on Electromagnetic Compatibility, Detroit, MI, USA.","DOI":"10.1109\/ISEMC.2008.4652070"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Abdulhameed, A.A., and Kub\u00edk, Z. (2022). Switchable Broadband-to-Tunable Narrowband Magnetic Probe for Near-Field Measurements. Sensors, 22.","DOI":"10.3390\/s22197601"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1049\/smt2.12083","article-title":"A two-turn loop active magnetic field probe design for high sensitivity near-field measurement","volume":"16","author":"Shao","year":"2022","journal-title":"Iet Sci. Meas. Technol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"5459","DOI":"10.1109\/TAP.2016.2606556","article-title":"A Simple Miniature Ultrawideband Magnetic Field Probe Design for Magnetic Near-Field Measurements","volume":"64","author":"Yan","year":"2016","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1109\/TAP.1964.1138213","article-title":"The loop antenna as a probe","volume":"12","author":"Whiteside","year":"1964","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1953","DOI":"10.1109\/TAP.2019.2948568","article-title":"Contribution to the Theory of Planar Wire Loop Antennas Used for Reception","volume":"68","author":"Clavelier","year":"2020","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/TIM.2021.3126376","article-title":"Closed-Form Expressions of Electric and Magnetic Near-Fields for the Calibration of Near-Field Probes","volume":"70","author":"Boyer","year":"2021","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1237","DOI":"10.1109\/TEMC.2019.2945560","article-title":"Measurement of Near-Field Electromagnetic Emissions and Characterization Based on Equivalent Dipole Model in Time-Domain","volume":"62","author":"Zhao","year":"2020","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Filipa\u0161i\u0107, M., and Dadi\u0107, M. (2022, January 23\u201327). Analysis and Design of a PCB Probe for Near Field Measurements. Proceedings of the 2022 45th Jubilee International Convention on Information, Communication and Electronic Technology (MIPRO), Opatija, Croatia.","DOI":"10.23919\/MIPRO55190.2022.9803419"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"642","DOI":"10.1109\/TEMC.2005.853165","article-title":"Calibration and compensation of near-field scan measurements","volume":"47","author":"Shi","year":"2005","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1049\/iet-smt.2010.0031","article-title":"Post-processing of electric field measurements to calibrate a near-field dipole probe","volume":"5","author":"Riah","year":"2011","journal-title":"IET Sci. Meas. Technol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1109\/TEMC.2010.2059030","article-title":"Frequency-Domain Probe Characterization and Compensation Using Reciprocity","volume":"53","author":"Weng","year":"2011","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"344","DOI":"10.1109\/TEMC.2020.3008387","article-title":"Analysis of Different Scalar Probe Compensation Methods for an Array of Near-Field EMI Probes","volume":"63","author":"Claeys","year":"2021","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1694","DOI":"10.1109\/22.734563","article-title":"Calibration of electric coaxial near-field probes and applications","volume":"46","author":"Gao","year":"1998","journal-title":"IEEE Trans. Microw. Theory Tech."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"648","DOI":"10.1109\/TIM.2012.2218678","article-title":"An Effective Method of Probe Calibration in Phase-Resolved Near-Field Scanning for EMI Application","volume":"62","author":"Zhang","year":"2013","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1109\/TEMC.2007.902194","article-title":"Applications of the Near-Field Techniques in EMC Investigations","volume":"49","author":"Baudry","year":"2007","journal-title":"IEEE Trans. Electromagn. Compat."},{"key":"ref_27","unstructured":"Carobbi, C.F.M., Millanta, L.M., and Chiosi, L. (2000). High-Frequency Behavior of the Shield in the Magnetic-Field Probes, IEEE."},{"key":"ref_28","unstructured":"Kim, J.M., Kim, W.T., and Yook, J.G. (2005). Resonance-Suppressed Magnetic Field Probe for Em Field-Mapping System, IEEE."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Chou, Y.T., and Lu, H.C. (2011, January 14\u201319). Electric field coupling suppression using via fences for magnetic near-field shielded-loop coil probes in low temperature co-fired ceramics. Proceedings of the 2011 IEEE International Symposium on Electromagnetic Compatibility, Long Beach, CA, USA.","DOI":"10.1109\/ISEMC.2011.6038275"},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Cao, Y.S., Wang, Y., Wu, S., Yang, Z., and Fan, J. (August, January 30). PCB Edge Shielding Effectiveness Evaluation and Design Guidelines. Proceedings of the 2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI), Long Beach, CA, USA.","DOI":"10.1109\/EMCSI.2018.8495380"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Chiappe, J. (2015, January 15\u201321). A comparison of relative shielding provided by stitching vias and edge plating. Proceedings of the 2015 IEEE Symposium on Electromagnetic Compatibility and Signal Integrity, Santa Clara, CA, USA.","DOI":"10.1109\/EMCSI.2015.7107667"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"2515","DOI":"10.1049\/iet-pel.2018.5780","article-title":"Design of coils on printed circuit board for inductive power transfer system","volume":"11","author":"Li","year":"2018","journal-title":"IET Power Electron."},{"key":"ref_33","unstructured":"(2023, June 01). Ansys HFSS. Available online: https:\/\/www.ansys.com\/products\/electronics\/ansys-hfss."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/16\/7308\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T20:38:54Z","timestamp":1760128734000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/16\/7308"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,8,21]]},"references-count":33,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2023,8]]}},"alternative-id":["s23167308"],"URL":"https:\/\/doi.org\/10.3390\/s23167308","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,8,21]]}}}