Radio Frequency Interference Characterization of 5G Device with Reciprocity Theorem

This article describes radio frequency interference (RFI) engineering analysis method to interpreting the coupling noise distribution and contribution of each noise component in the complex system. In this paper, a generic co-design flow for complex system and antenna is proposed. Frequency domain response of simulation with reciprocity theorem is correlated well with spectrum analyzer (SA) and vector network analyzer (VNA). An efficient approach achieves the validity and feasibility of RFI analysis of commercial 5G devices. The goal is to provide sufficient performance in a cost-effective solution and to be successful.