IEEE EMC-S PL activity no. 01/2026: Half-Day EMC Seminar at Accredited EMC Test Lab with LIVE Demos and Expert Speakers

#EMC #Antenna #Standards #CISPR #ANSI #C63.4

Join us for a special event with expert speakers who are active contributors to the international EMC Standards organizations, including CISPR, IEEE, and ANSC C63. You'll hear two presentations as below and witness two LIVE demos. A complimentary lunch is provided courtesy of ETS-Lindgren.

Comparison of Established and Alternative Emission Measurements of an Artificial EUT up to 40 GHz

By Max Rosenthal, Otto-von-Guericke-Universität Magdeburg, Germany

Abstract: Radiated emission measurements above 6 GHz pose significant challenges for standardized test procedures in both anechoic and reverberation chambers. At these frequencies, equipment under test (EUT) is typically electrically large and exhibits highly directive and spatially inhomogeneous radiation characteristics. When applying established anechoic chamber methods according to ANSI C63.4 and CISPR 16-2-3, measurement results become strongly dependent on angular sampling density. Insufficient angular resolution leads to undersampling of radiation maxima, resulting in large measurement uncertainty and poor reproducibility, while very fine angular scanning causes impractically long test times. An alternative approach specified in IEC 61000-4-21 uses reverberation chambers to measure the total radiated power of the EUT, eliminating spatial scanning and significantly reducing measurement duration. However, emission limits defined in terms of field strength require conversion from total radiated power using the maximum directivity of the EUT, which is generally unknown and must be estimated statistically based on electrical size.

This presentation compares emission measurements of an artificial EUT performed in anechoic and reverberation chambers up to 40 GHz, highlighting key challenges, uncertainty contributors, and comparability issues of both methods.

CISPR and ANSC C63® Overview on Site Validation Measurements from 18 GHz to 40 GHz - Latest Advances in EMC Test Site Evaluation Using Advanced Antenna Measurement Techniques

By Zhong Chen, Chief Engineer, ETS-Lindgren, Cedar Park, Texas, USA

Abstract: This presentation introduces a novel approach for EMC chamber validation beyond 18 GHz, currently under consideration in ANSI C63 and CISPR standards. By integrating Cylindrical Mode Filtered Site Voltage Standing Wave Ratio (CMF SVSWR) with Compressed Sensing (CS), we address inherent challenges in traditional SVSWR methods, such as inconsistency and slow data acquisition. CMF SVSWR utilizes circular path measurements and mode domain post-processing to discern antenna and chamber reflections, crucial for comprehensive VSWR analysis. Compressed Sensing, a data-driven machine learning technique, exploits signal sparsity to reconstruct data from fewer randomly sampled measurement points, thereby reducing test times and eliminating the need for precise turntable positioning.

Cylindrical Mode Filtered SVSWR Demonstration

Demonstration Abstract: The Cylindrical Mode Filtered SVSWR (CMF SVSWR) is measured by placing the transmit antenna (typically a low gain omni-directional antenna) at the edge of the turntable and performing a single cut vector pattern measurement. The vector S21 as a function of turntable angle at each frequency is transformed to the spectrum domain, where a filter can be applied to mathematically remove the chamber effects. The SVSWR is derived by comparing the original pattern in the chamber to the “clean” filtered pattern. This CMF SVSWR provides a more comprehensive evaluation of the EMC chamber quiet zone and can be readily measured without any special positioning fixtures. The demonstration will show an entire measurement process including the post processing which can be performed in real time. This new measurement technique is under consideration for the new draft standard ANSI C63.25.3 under development by the ANSC C63® committee for EMC test sites from 18 GHz to 40 GHz.

Speaker Biographies

Zhong Chen is Chief Engineer at ETS-Lindgren, located in Cedar Park, Texas. He has more than 25 years of experience in RF testing, anechoic chamber design, as well as EMC antenna and field probe design and measurements. He is an active member of the ANSC C63® committee currently serving as Vice-Chair and is the immediate past Chair of Subcommittee 1 which is responsible for the antenna calibration (ANSI C63.5) and chamber/test site validation standards (ANSI C63.4 and the ANSI C63.25 series). Mr. Chen is chair of the IEEE Standard 1309 committee responsible for developing calibration standards for field probes, and IEEE Standard 1128 for absorber evaluation. He is a former member of the IEEE EMC Society Board of Governors and the Antenna Measurement Techniques Association (AMTA) Board of Directors. He is a past Distinguished Lecturer for the EMC Society and is recognized as an AMTA Fellow. His research interests include measurement uncertainty, time domain measurements for site validation and antenna calibration, and development of novel RF absorber materials. Several papers authored and co-authored by Mr. Chen have received best paper recognition at global conferences. Zhong Chen received his M.S.E.E. degree in Electromagnetics from the Ohio State University at Columbus. He may be reached at zhong.chen@ets-lindgren.com.

Max Rosenthal received his Dipl.-Ing. degree in Electrical Engineering and Information Technology from the Technische Universität Dresden, Germany, in 2019. Since then, he has been a research assistant at the Chair of Electromagnetic Compatibility at the Otto von Guericke University Magdeburg, Germany, where he is currently pursuing the Ph.D. degree. His research interests include EMC measurement techniques in anechoic and reverberation chambers, radar and antenna calibration techniques, and stochastical modeling of equipment under test.

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• Estkowskiego 6 Street
• Poznan, Wielkopolskie
• Poland
• Building: Łukasiewicz – Poznań Institute of Technology

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• Contact Event Host

• Krzysztof Sieczkarek +48 618504989

• Co-sponsored by Lukasiewicz - PIT, ETS-Lingren

• Link to External Registration

10:00 – 10:30 Walk in, morning coffee

10:30 – 10:45, Welcome, Janet O’Neil – ETS-Lindgren/IEEE EMC Society Vice President – Member Services, Board of Governors and Krzysztof Sieczkarek – Lukasiewicz Poznan of Technology/IEEE EMC Society Poland Chapter Chair, Region 8 Coordinator, Board of Governors Member

10:45 – 11:30 First Presentation

“Comparison of Established and Alternative Emission Measurements of an Artificial EUT up to 40 GHz”

By Max Rosenthal, Otto-von-Guericke-Universität Magdeburg, Germany

11:30 – 12:00 Refreshment Break

12:00 – 13:00 Second Presentation

"CISPR and ANSC C63® Overview on Site Validation Measurements from 18 GHz to 40 GHz - Latest Advances in EMC Test Site Evaluation Using Advanced Antenna Measurement Techniques"

By Zhong Chen, ETS-Lindgren, Cedar Park, Texas

13:00 – 13:45 Networking Lunch with Speakers and Attendees Courtesy of ETS-Lindgren

13:45 – 14:30

LIVE Demonstration Group 1 in Lukasiewicz – PIT EMC Anechoic Chamber: Cylindrical Mode Filtered SVSWR Demonstration by Zhong Chen, ETS-Lindgren

13:45 – 14:30

LIVE Demonstration Group 2 in Lukasiewicz – PIT EMC Laboratory: Auto-Tuned Antenna for Immunity Testing in frequency range 30MHz ÷ 200 MHz — Automatic VSWR Tuning to Maximize Field Strength with Lower Amplifier Power by Grzegorz Modrykamień, EMC-FORTO, and Larry Sheridan, ETS-Lindgren

14:30 – 15:15

Groups 1 and 2 will swap chambers to see the second demonstration.

All IEEE members and non-members are welcome to attend this FREE event, but you must register in advance to ensure adequate seating and catering.