Japanese firm Murata Manufacturing has developed a range of automotive compliant chip ferrite beads that provide wide band noise suppression of high-frequency 5G (5.9GHz) C-V2X. Murata’s new BLM15VM range significantly improves reception sensitivity in V2X communications in the 5.9GHz bands for autonomous driving.

The new range also provides for stable operation of high-frequency 5G dedicated short-range communications (DSRC) in the 5.8 GHz band, improving road safety communications.

According to Murata, this is the world’s first product that removes noise in high-frequency communication (including Sub6 bands) for C-V2X.

Mass production is scheduled to begin in July 2025.

In recent years, the use of high-frequency wireless communication in the automotive sector has increased. It is primarily used for content distribution for navigation, audio and other infotainment systems. Improving sensitivity and noise suppression in advanced high-frequency communication systems is important to support the connected car for ADAS (Advanced Driver Assistance Systems) and autonomous driving.

RF inductors typically used for noise suppression in sub-6GHz communication have a narrow frequency band at high impedance, making it necessary to select components that match the noise frequency band. With its broad high-frequency band at high impedance, the BLM15VM series allows easy noise suppression across multiple frequency bands using just one product. Even at 5.9GHz, the chip ferrite beads within the series will typically attain impedance values of 1000Ω.

By enabling error-free high-frequency communication, key for autonomous driving, the BLM15VM series significantly improves reception sensitivity in V2X communication in the 5.9GHz bands for autonomous driving and stable operation of dedicated short-range communication (DSRC) based control systems, operating in the 5.8GHz band, for improved road safety.

Additionally, since Wi-Fi 6E and Wi-Fi 7, the communication standards for wireless LAN, also use the sub-6GHz band, this product can improve sensitivity and suppress noise in consumer communication devices.

The AEC-Q200-compliant BLM15VM series of chip ferrite beads from Murata supports operating temperatures between -55 to 150°C and is supplied in a compact 0402-inch size (1.0×0.5mm).