Analysis of Noise Current From an Inverter at High Frequency by a Spectrum Analyzer
Journal
2025 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)
Start Page
470-471
Date Issued
2025-08-18
Author(s)
Abstract
This paper provides measurement results of the common-mode noise of a inverter system by a spectrum analyzer (SA). Emphasis is on how to obtain the characteristics of the noise at 50 MHz, a frequency >1000x higher than the switching frequency. It is demonstrated that using the normal sweeping mode of SA, the results provide little information regardless of the RBW used. In contrast, the zero-span mode of SA can clearly reveal the property of the noise, thereby facilitating EMC diagnostic and optimization.
SDGs
Publisher
IEEE
Type
conference paper