Joint Seattle Chapter Meeting Dinner and Demo Special Event
Join Us for a Special Event - Novel Wireless and EMC Measurement Test Techniques: A Practical, Hands-On Event Addressing Fundamental to Advanced Topics – Complemented by a Live Demo and Dinner! FREE to attend for all IEEE members and non-members, but you must register in advance.
In addition to the TWO presentations noted below and dinner sponsored by Advanced Test Equipment Corp. (ATEC), there will be a LIVE demo conducted by Zhong Chen using one of the EMC test chambers at CKC Labs. Join us for this unique hands-on learning opportunity!
Demonstration Title: Cylindrical Mode Filtered SVSWR
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. 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.
PLUS - Attendees will be informed of the latest news concerning the 2022 IEEE International Symposium on EMC+SIPI to be held in Spokane, WA, August 1-5.
Date and Time
Location
Hosts
Registration
-
Add Event to Calendar
- CKC Labs
- 22116 23rd Dr SE
- Bothell, Washington
- United States 98021
- Contact Event Hosts
-
Katherine Helgeby, CKC Labs, phone 800-500-4EMC (4362), extension 2100, Katherine.Helgeby@ckc.com
Speakers
Aaron Cohen of Skyworks, Inc.
EMC 101 - A Beginner’s Guide to EMC for Multimedia Equipment
This presentation covers the basics of emissions and immunity as they apply per FCC 15B and CISPR 32/35 for multimedia equipment. Since many of the same requirements apply to radios, it is a good reference for wireless testing and approvals for unlicensed radios such as Bluetooth and Wi-Fi as well. The presentation explores the reasons for unintentional emissions, including basics of antennas, and the reasons why immunity tests are required. The presentation is meant to be a reference for future test and troubleshooting, so it is verbose with helpful tricks learned from 15+ years of EMC and wireless compliance debug work.
Biography:
Aaron Cohen is a Principal Engineer currently working at Skyworks, Inc. a leading manufacturer of RFICs and RF components. He has worked in the industry as an electrical engineer for over 20 years and focused on RF test, EMC test and troubleshooting as well as certification of intentional radiators (wireless) and unintentional radiators (digital) products. The majority of his career has been spent at Logitech helping to make consumer electronics and wireless gadgets for the masses. His experience also includes working at Intel's Mobile Communications Group on cellular and tablet device certifications, Biamp which makes high-end digital audio devices via ethernet, and again at Logitech as the Technical Manager responsible for A2LA accreditation of their EMC test facilities. Mr. Cohen is also an independent consultant that helps smaller companies navigate regulatory certification requirements, including testing and troubleshooting for emissions and immunity.
Zhong Chen of ETS-Lindgren
Insights into the New EMC Test Site Validation Requirements in ANSI C63 Standards
Site validation requirements are being consolidated into the ANSI C63.25 series of standards within the American National Standards Committee (ANSC). Some important changes and updates are reflected in the recently published ANSI C63.25.1, soon to be released C63.25.2, and ongoing work in the C63.25.3 working group. This presentation will provide insights into the development efforts and rationale behind these recent changes. The discussion will contain three topics, based on the three frequency ranges (below 1 GHz, 1-18 GHz, and 18-40 GHz), as is divided by the three C63.25 standards. We will go over the evolutions of the NSA method to the Site Comparison Method (SCM) and Delta NSA (DNSA) method in C63.25.2 (< 1 GHz), the CISPR SVSWR to Time Domain SVSWR in C63.25.1 (1-18 GHz), and the recently developed Cylindrical Mode Filtered SVSWR in C63.25.3 (18-40 GHz). Attendees will gain a deeper understanding of the technical background (the whats and whys) for site validation methods, which should help with the preparation for the upcoming changes to ANSI C63.4 and ANSI C63.5. The site validation currently specified in these industry flagship standards will be removed; instead, C63.4 and C63.5 will include a reference to the C63.25 family of standards for the new site validation test methods.
Biography:
Zhong Chen is the Director of RF Engineering with ETS-Lindgren, located in Cedar Park, Texas. He has over 25 years of experience in RF testing, anechoic chamber design, as well as antenna and EMC field probe design and measurements. He is currently a member of the Antenna Measurement Techniques Association (AMTA) Board of Directors. Mr. Chen is the Chair of Subcommittee 1 of ANSC C63, which is responsible for EMC antenna calibration and test site validation standards. He is also chair of the IEEE Standard 1309 committee responsible for developing calibration standards for field probes, and IEEE Standard 1128 for absorber measurements. He has served as a Distinguished Lecturer for the IEEE EMC Society. His research interests include measurement uncertainty, time domain measurements, and development of novel RF absorber materials. Mr. Chen received his M.S.E.E. degree in Electromagnetics from the Ohio State University at Columbus.
Agenda
All times are Pacific Daylight
4:00 pm Registration
4:15 pm Welcome and Introductions – By Dennis Lewis, Seattle EMC Chapter Chair
4:20 pm Update on the 2022 IEEE EMC Society Symposium in Spokane August 1-5 – By Janet O’Neil, General Chair of the Symposium Organizing Committee
4:30 pm First presentation: EMC 101 - A Beginner’s Guide to EMC for Multimedia Equipment – By Aaron Cohen, Principal Engineer, Skyworks, Inc., Hillsboro, Oregon
5:15 pm Light Dinner and Refreshments + CKC Labs Tour for those interested in seeing the NEW Environmental Test Labs – By Robert Tozier, CKC Labs
6:00 pm Second presentation: Insights into the New EMC Test Site Validation Requirements in ANSI C63 Standards – By Zhong Chen, Director of RF Engineering, ETS-Lindgren, Cedar Park, Texas
7:00 pm Live demonstration of the new EMC site validation technique proposed for ANSI C63.25.3 (18 GHz to 40 GHz)
8:00 pm Adjourn
This is a free meeting open to IEEE members and guests, but you must register IN ADVANCE no later than Wednesday, June 15, to ensure adequate seating and catering. See full meeting details on registration page.