ETS-Lindgren, a pioneer in Electromagnetic Compatibility (EMC) and Radio Frequency (RF) testing solutions, participated in the Antenna Measurement Techniques Association (AMTA) 2025 Regional Meeting, held on May 20, 2025, at The Westin Tempe in Tempe, Arizona. Renowned for its expertise in test and measurement, ETS-Lindgren presented a range of technologies and insights at the event.
As part of the technical program, Yibo Wang, RF Engineer at ETS-Lindgren, delivered a presentation titled “The Empirical Mode Decomposition (EMD) Method and Its Application in Antenna Measurements,” focusing on EMD and the Hilbert–Huang Transform (HHT)—data-driven techniques designed for analyzing non-linear and non-stationary signals. Unlike traditional methods such as the Fourier or wavelet transforms, which rely on predefined basis functions, EMD extracts intrinsic mode functions (IMFs) directly from the data. This makes it particularly effective for analyzing complex signals commonly encountered in antenna measurements.
Environmental noise and interference often hinder performance characterization in antenna testing. By applying EMD, measured signals can be decomposed into multiple resolutions, enabling clearer identification of the true antenna response and improving the separation of desired signals from background noise. Dr. Wang’s presentation covered the fundamental principles of EMD and demonstrated its practical value in enhancing signal analysis and improving the accuracy of antenna performance assessments…