It is a universally acknowledged fact that the process of updating standards tends to lag behind the rapid emergence of new technologies. This discrepancy often leads to situations where cutting-edge innovations surpass existing standards, resulting in the need for modifications or exceptions. This phenomenon is not limited to any specific industry but occurs across various sectors.

For example, consider motor technologies that significantly outpace their counterparts. In some countries, motor standards, specifically those related to creepage and clearance (not EMC requirements, but illustrative nonetheless), may prevent the adoption of these advanced motors without substantial modifications. Such instances are not rare and highlight the challenge posed by the swift advancement of technology in relation to established standards.

The automotive industry serves as a clear example of an industry that has been compelled to adapt its EMC test standards to accommodate technological shifts, particularly with the rise of electric vehicles (EVs). Similarly, emerging industries like electric vertical take-off and landing (eVTOL) aircraft are expected to face similar challenges. In these cases, a combination of standards such as RTCA-DO-160 and IEC will likely be used to assess EMC performance.

Traditionally, EMC tests, including radiated emission tests, were designed to protect radio and TV receivers. However, the advent of 5G and the anticipation of 6G technology indicate that we will inevitably extend the frequency range of radiated emission tests. We have already witnessed this extension from 1 GHz to 6 GHz, and this trend is expected to continue as technology advances.

A noteworthy development to monitor is the potential expansion of the lower boundary of the frequency spectrum, particularly in the context of conducted emission tests. Historically, conducted emission tests typically commenced at 150 kHz (with exceptions like lighting products, which started at 9 kHz). However, this paradigm is likely to shift in the near future. Devices operating within the frequency range between 9 kHz and 150 kHz are known to generate significant electromagnetic interference. Lowering the testing and compliance range in this segment is a regulatory response to address the rising interference challenges posed by a growing number of devices operating in this spectrum. These regulatory changes aim to ensure the harmonious coexistence of electronic devices with minimal interference, which has become increasingly challenging in recent years.

While existing products will require adaptation to comply with the evolving standards over time, ongoing product development will need to adhere to the new restrictions. The ongoing electrification drive will introduce new challenges as technologies like heat pumps, photovoltaic (PV) panels, and vehicle-to-grid bidirectional converters introduce harmonics that can disrupt the spectrum. In fact, by 2026, the industry will introduce extended EMC regulations that expand the lower limit of regulated frequencies from 150 kHz down to 9 kHz.