Research on proficiency testing methods for radiated spurious emissions of wireless communication devices

Driven by stringent technical regulations governing radiated spurious emissions (RSE) from wireless communication devices, the consistency of RSE measurements has become a critical focus. This study presents a proficiency testing (PT) scheme employing a comb generator as a reference sample, detailing methodologies for sample stability evaluation, experimental protocols, and sample transfer logistics. Two distinct statistical approaches were applied to analyze measurement data, with discrepancies between the result sets systematically investigated. A comparative analysis of uncertainty-integrated PT evaluation and data distribution-based statistical methods was conducted to identify root causes of deviations. Key factors contributing to unsatisfactory PT outcomes were identified, including performance variations in fully anechoic chambers (FACs), calibration inaccuracies in measurement chains, impedance mismatching, and turntable rotational errors. The proposed framework establishes a scientific foundation for RSE proficiency testing in wireless devices, offering actionable insights to enhance laboratory testing capabilities and industry-wide quality control practices.