Estimating the Reduction of Radiated Emissions From Microstrip Components Using Network Analyzer With a Bulk Current Injection Probe

This work presents a novel measurement method using a network analyzer with a bulk current injection (BCI) probe to measure the common-mode conversion coefficient of microstrip components in an RF/microwave circuit. Based on the proposed measurement method, far-field radiated emissions from microstrip components are obtained, which closely corresponds to measurements in a fully anechoic chamber. The proposed method also estimates the radiated emission reduction by miniaturizing the physical size of microstrip bandpass filters (BPFs). Full-wave electromagnetic simulation further demonstrates the effectiveness of the measurement method.