Automotive-compliant chip ferrite beads deliver wide band noise suppression

Murata Manufacturing Co., Ltd. continues to advance automotive noise suppression technology with another industry first. By employing proprietary material technology and optimised structural design, the company’s new BLM15VM series of automotive-compliant chip ferrite beads deliver wide-band noise suppression of high-frequency (5.9GHz) 5G vehicle-to-everything (5G-V2X) applications that exhibit high impedance.

In recent years, the usage 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 these advanced high-frequency communication systems becomes mission-critical to support the connected car for ADAS and, eventually, autonomous driving.

Unlike RF inductors that have a narrow frequency band at high impedance, the series provides a broad high-frequency band at high impedance. This unique feature enables easy noise suppression across multiple frequency bands with a single product. Even at 5.9GHz, the chip ferrite beads within the series typically attain impedance values of 1000Ω, showcasing the versatility and reliability of the series.

By enabling error-free high-frequency communication, which is vital for autonomous driving, the series significantly improves reception sensitivity in V2X communication within the 5.9GHz band, ensuring stable operation of DSRC-based control systems operating in the 5.8GHz band, thereby enhancing road safety. Additionally, since Wi-Fi 6E and Wi-Fi 7, the communication standards for wireless LAN, also utilise the sub-6GHz band, this product can improve sensitivity and reduce noise in consumer communication devices.

The AEC-Q200-compliant BLM15VM series of chip ferrite beads supports operating temperatures between -55C to 150C and is supplied in a compact 0402-inch size(1mm × 0.5mm).