NOK Flexible Electromagnetic Wave Absorber Developed for High-Speed Communication Devices

NOK Develops Ultra-Thin Electromagnetic Wave Absorber for Advanced Communication Systems

NOK announced on July 21 that its subsidiary Mektec, a flexible printed circuit (FPC) manufacturer, has developed a NOK flexible electromagnetic wave absorber measuring less than 0.1 mm in thickness. The product is designed for high-frequency noise suppression in next-generation high-speed communication devices, including automotive applications such as in-vehicle radar systems for autonomous driving. The ultra-thin absorber technology aims to improve communication performance by reducing electromagnetic interference in compact and advanced electronic systems.

Flexible Design Enables Installation in Complex Vehicle Environments

The newly developed electromagnetic wave absorber leverages Mektec’s FPC manufacturing technology to provide a thin, lightweight, and flexible structure. Its flexibility allows installation on curved surfaces and in confined spaces where conventional solutions may face limitations. The technology is designed to suppress high-frequency noise in the millimeter-wave band, supporting improved reliability and performance for advanced communication applications. This capability is particularly relevant for automotive systems where compact packaging and stable radar operation are increasingly important for autonomous driving functions.

High Absorption Performance Supports 5G and Future Mobility Applications

The product achieved an electromagnetic wave absorption rate of more than 99% in the 28 GHz band used for 5G millimeter-wave communications. This performance enables effective suppression of unwanted electromagnetic signals while supporting high-speed data communication requirements. The technology is expected to contribute to applications across communication infrastructure, vehicles, and next-generation mobility systems. The company anticipates adoption in 5G and 6G communication devices, base stations, automobiles, humanoid robots, and wearable devices requiring advanced electromagnetic management solutions.

Potential Automotive Impact Through Improved Radar Communication

For automotive applications, the absorber technology can support improved electromagnetic compatibility in vehicles equipped with advanced driver assistance systems and autonomous driving technologies. In-vehicle radar systems operate in high-frequency bands where electromagnetic interference management is critical for accurate sensing performance. By enabling flexible integration into vehicle components, the solution may help manufacturers develop more compact and reliable electronic architectures for future mobility platforms. The technology reflects increasing demand for advanced materials and components supporting connected and automated vehicle development.

Frequently Asked Questions

What is the main purpose of NOK’s electromagnetic wave absorber?
The main purpose of NOK’s electromagnetic wave absorber is to suppress high-frequency electromagnetic noise in advanced communication devices and automotive systems. The ultra-thin flexible product helps improve communication performance by reducing interference in millimeter-wave frequency bands. It is designed for applications including in-vehicle radar, 5G and 6G communication devices, base stations, next-generation mobility systems, humanoid robots, and wearable electronics requiring reliable electromagnetic control.