The integration of electronic components into products is increasing due to innovations in advanced semiconductor technology and advancements in next-generation communication technology. As new technologies such as electric vehicles and wireless charging mature, electromagnetic noise issues are intensifying, making it urgent to design EMI and EMC countermeasures to address them.

The 2022 e4ds Analog Day concluded on the 9th at the Grand Auditorium of the Korea Conference Center in Seocho-dong, Seoul, amidst enthusiastic interest from the participants. At the event hosted by Channel 5 Korea and organized by e4ds news, numerous active developers and engineers attended to explore the latest outlooks and solutions for EMC issues.

The presentations on this day included sessions on: trends in EMI/EMC standards and certification by Sung Kwan-young, Team Leader at the Korea Testing & Research Institute; technology trends in electromagnetic shielding and absorption materials by Park Hyun-ho, Professor at the University of Suwon; noise countermeasures for SMPS (Switching Mode Power Supply) by Kim Ji-sung, Visiting Professor at KAIST; analysis and modeling of conductive noise characteristics of electronic brakes for electric vehicles by Kim Hong-seok, CEO of CPS TECH; and outlook on wireless power transmission technology and EMC countermeasures by Ahn Seung-young, Professor at KAIST.

In the first session, Team Leader Seong Gwan-yeong gave a presentation on EMC measurement and standardization trends. Team Leader Seong, who noted that legal regulations on EMC are gradually tightening and acting as non-tariff trade barriers (TBT), delivered an excellent lecture covering basic concepts and the latest issues, ranging from an overview of electromagnetic waves and interference issues to EMC certification systems, international standard-setting organizations, application principles, and measurement technology trends.

Team Leader Seong stated, “With the emergence of new technologies such as robots, wireless power transmission, and wearable devices, issues regarding the setting of EMC regulatory frequencies and limits have arisen,” adding, “Due to the diversification of disturbance sources, test items have increased, and there are also issues regarding electromagnetic safety (EMF) for the human body.”

Professor Park Hyun-ho of the University of Suwon and Professor Kim Ji-sung of KAIST delivered brief yet key explanations on the theories and principles regarding electromagnetic shielding and absorption materials and SMPS noise countermeasures, respectively. Professor Park noted that the shielding market is developing in various mobility sectors, including electromagnetic shielding in automotive systems and shielding of electric vehicle powertrains. Professor Kim shared insights on the causes of switching DC-DC converter noise and the design of countermeasures among the many types of SMPS.

The second session was organized as a session to share EMC countermeasures on electric vehicle components and wireless power transmission, fields that are gaining attention as next-generation technologies.

Kim Hong-seok, CEO of CPS TECH, is a power electronics EMC expert with a track record of numerous R&D projects with Hyundai Motor Company, Hyundai Mobis, Google, Facebook, and others, and he runs CPS TECH, which possesses power and signal integrity technology.

The challenges in automotive EMC simulation involve the analysis of large and complex systems, intellectual property and security issues, and problems with modeling and analysis algorithms. Accordingly, a solution to address these issues by actively utilizing measurement-based modeling and analysis was presented at the presentation.

In the final presentation, Professor Ahn Seung-young of KAIST stated, “The field of wireless power transmission can be applied in various places, such as ultra-small IoT sensors and medical implantable electronic devices,” and presented various future prospect examples, including wireless charging technology for implantable medical devices, wireless power transmission technology for railway systems, and drone wireless charging systems.

He then explained the development trends of various electromagnetic shielding technologies to block electromagnetic leakage and technologies for reducing magnetic field leakage. It was also added that regarding the current status of R&D on electromagnetic safety for wireless charging, research on life detection technology and electromagnetic interference between devices is being conducted at the Korea Electronics and Telecommunications Research Institute and the KEPCO-KAIST group.

Meanwhile, e4ds hosts various conferences and technical webinars, such as Analog Day, Semiconductor Trend Day, and IIoT Innovation Day, to enhance the professional capabilities of its independent group of developers and engineers alongside the technological and industrial development of the electronics industry.