Understanding High-Frequency Chip Bead Ferrites

With ongoing technological progress, the need for components that support higher frequencies in wireless applications is growing. Würth Elektronik’s WE-CBF HF series, a high-frequency SMT chip bead ferrite, meets this demand by offering improved performance at higher frequencies compared to standard WE-CBF series ferrites.

Chip bead ferrites are essential in suppressing noise in electronics without affecting signal integrity. The WE-CBF HF series boasts a unique internal structure that reduces parasitic capacitance, resulting in a higher self-resonance frequency (SRF) and broader operating frequency range. This makes them ideal for modern applications that require effective EMI suppression in the gigahertz range that can be found in new and existing device technologies.

Würth Elektronik has also developed a cutting-edge measurement methodology that allows for more accurate characterization of these components, especially at frequencies beyond 3 GHz and under high DC bias currents. This innovation enables engineers to better understand the performance of ferrites in real-world conditions.

In real-world applications, the WE-CBF HF ferrites have proven to be versatile, offering solutions in areas such as broadband amplifiers, anti-aliasing filters for Analog-to-Digital Converters (ADCs), and log-periodic dipole antennas (LPDA). Their ability to maintain high impedance over a wide frequency range ensures optimal performance in these advanced electronic designs.

By integrating the WE-CBF HF ferrites into designs, engineers can achieve greater reliability and efficiency in high-frequency applications, making them a valuable component in the ever-evolving world of wireless technology.

Download the full Application Note here.