An Effective and Efficient Approach for Radiated Emission Prediction Based on Amplitude-Only Near-Field Measurements

作者：Zhao, Wei-Jiang^*; Wang, Bin-Fang; Liu, En-Xiao; Park, Hark Byeong; Park, Hyun Ho; Song, Eakhwan; Li, Er-Ping

来源：IEEE Transactions on Electromagnetic Compatibility, 2012, 54(5): 1186-1189.

DOI：10.1109/TEMC.2012.2215874

• Differential evolution
• dipole
• electromagnetic emission
• near-field measurement

A new approach is proposed for modeling electromagnetic emissions of a printed circuit board (PCB) based on amplitude-only near-field measurement data. Magnetic dipoles placed over the top layer of the PCB are introduced as the equivalent of actual radiated sources. A restarted optimization procedure based on a differential evolution algorithm is developed to determine the parameters of the dipoles (number, position, and moment components) via minimizing the difference between the measured magnetic near field and that radiated by the dipoles. These equivalent dipoles can be used to predict the radiated emissions of the PCB once being determined. The proposed approach does not need the phase of the measured near fields, and its computational complexity is very low. Numerical results are presented to demonstrate the validity and efficiency of the proposed approach.

• 出版日期2012-10
• 单位浙江大学