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Electrical and Computer Engineering Faculty Research & Creative Works
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Modeling Radiated Emissions Through Shielding Boxes Based On The Tangential Electrical Field Samplings Over Openings, Ping Li, Li (Lijun) Jun Jiang
Modeling Radiated Emissions Through Shielding Boxes Based On The Tangential Electrical Field Samplings Over Openings, Ping Li, Li (Lijun) Jun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
The radiation from radiators such as PCBs inside an enclosed shielding box with ventilation slots is an important issue for electromagnetic compatibility or interference characterizations. In this paper, a two-step process is proposed based on the equivalence principle and the electric field integral equation method to complete the radiation prediction. The tangential electric fields over the slots on shielding boxes are first sampled to be the equivalent magnetic currents radiated from internal PCBs. In the second step, to avoid the computation of complex nonanalytical dyadic Green's functions when the field radiation is computed directly from the equivalent source, the surface …
Source Reconstruction Method-Based Radiated Emission Characterization For Pcbs, Ping Li, Li Jun Jiang
Source Reconstruction Method-Based Radiated Emission Characterization For Pcbs, Ping Li, Li Jun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
A technique based on a source reconstruction method (SRM) is employed to reproduce the same electromagnetic radiated emissions from printed circuit boards (PCB). This equivalent source is composed of both the electric and magnetic currents that are represented by a set of Rao-Wilton-Glisson basis functions. Planar magnetic near field is served as the input information for the SRM. The equivalent source is inversely acquired through the conjugate gradient algorithm that minimizes the norm of the residue. Magnetic field integral equation is utilized to find out the unknown coefficients of the currents. This method is directly extended to model the emissions …