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E-field extraction from Hx- and Hy- near field values by using plane wave spectrum method
23-Dec-2010 1-Jan-2011 23-Dec-2010 23-Dec-2010
This paper deals with a technique for calculating the 3D
E-field components knowing only the two components (Hx and Hy) of the
H-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 E-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
E-field deduced from H-field and the own E-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 E-field and that one
extracted from the H-field was realized by considering the near-field
scanned at the height, z = 5 mm and 8 mm above the under test structure at
the operating frequency, f = 1 GHz. The presented technique can simplify the
difficulties about the E-near-field measurement in EMC applications.
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