Murata Manufacturing Co, Ltd has introduced a new line of chip ferrite beads designed specifically for next-generation automotive communication systems. The BLM15VM series is engineered to suppress high-frequency noise in the 5.9GHz band, which is essential for advanced vehicle-to-everything (V2X) applications such as 5G connectivity and autonomous driving. Mass production is expected to begin in July 2025.
As the automotive industry adopts higher-frequency wireless technologies for navigation, media, and safety functions, ensuring stable signal performance has become increasingly important. These systems are critical to the performance of driver assistance features and the eventual rollout of fully autonomous vehicles.
Traditional RF inductors used for frequencies under 6GHz typically offer high impedance over a narrow range, requiring careful matching to the specific frequency to be filtered. The BLM15VM series overcomes this limitation with a broader suppression range and consistently high impedance, reaching 1000Ω even at 5.9GHz. This allows engineers to use a single component to address noise across multiple frequency bands, simplifying circuit design and improving performance.
This development is particularly relevant for V2X communication systems operating in the 5.9GHz band, where maintaining clear signal transmission is vital for vehicle coordination and safety systems. The new beads also enhance performance in dedicated short-range communication (DSRC) systems running at 5.8GHz.
Beyond automotive applications, the same technology proves useful in consumer electronics. With the latest wireless LAN standards like Wi-Fi 6E and Wi-Fi 7 also operating in the sub-6GHz range, the BLM15VM series can boost signal clarity and reduce interference in a wide variety of devices.
The components meet the AEC-Q200 standard for automotive electronic components and are built to withstand operating temperatures from -55°C to 150°C. Measuring just 1.0 x 0.5mm (0402-inch size), they are ideal for compact, space-sensitive designs.
Murata continues to develop high-performance passive components to meet the evolving needs of automotive and consumer markets. The company’s ongoing innovation in materials and component design reflects its commitment to advancing reliable, high-frequency communication across industries.
