New systems measures full magnetization hysteresis at MHz frequencies and high magnetic fields

High-frequency magnetic characteristics are essential for improving the efficiency, miniaturization, and operating frequency of power conversion devices such as power supply circuits, inductors, and transformers. However, conventional measurement methods face two major challenges. First, generating sufficiently large magnetic fields at high frequencies requires high power and high voltages. Second, many methods can probe only the initial magnetization region because the achievable magnetic field amplitude is limited. Consequently, reproducing the actual operating environment of next-generation power electronics devices has remained difficult.