E-field extraction from Hx- and Hy- near field values by using plane wave spectrum method

International audienceThis paper deals with a technique for calculating the 3D -field components knowing only the two components ( and ) of the -field in near-zone. The originality of the under study technique lies on the possibility to take into account the evanescent wave influences. The presented -field extraction process is based on the exploitation of the Maxwell-Ampere relation combined with the plane wave spectrum (PWS) method. The efficiency of the proposed technique is evidenced by comparing the -field deduced from -field and the own -field radiated by the association of electrical- and also magnetic- elementary dipoles in different configurations by using Matlab text programming environment. In addition, as a concrete demonstrator, the concept was also validated with the computation of EM-wave radiated by an open-end microstrip transmission line. As result of comparison, very good agreement between the exact -field and that one extracted from the -field was realized by considering the near-field scanned at the height, = 5 mm and 8 mm above the under test structure at the operating frequency, = 1 GHz. The presented technique can simplify the difficulties about the -near-field measurement in EMC applications