Exploring Wideband Modulation in Reverberation Chambers: Possibilities and Practical Approaches

As wireless systems grow more complex, accurately assessing non-linear distortion, particularly in active devices, has become increasingly important. Metrics such as Error Vector Magnitude (EVM) depend on detailed vector signal analysis, requiring both amplitude and phase information. In reverberation chambers, however, the highly reflective environment limits phase coherence bandwidth, making such measurements difficult. This presentation investigates whether and how the gap between conductive and over-the-air (OTA) figures of merit can be bridged in a reverberation chamber. It highlights research showing the correlation between these metrics for an active electronically scanned array (AESA) in both transmit and receive modes.