Numerical Evaluation of Near-Field to Far-Field Transformation Robustness for EMC


Near-Field (NF) to Far-Field (FF) transformation techniques are widely used for antenna radiation problems. To perform a NF to FF or a NF to NF transformation for EMC applications, the large frequency range, and a weak signals will require data in the reactive near field. In principle, the transformation can be performed if all sources are confined in the scanned area using Huygens' Principle, which requires knowledge of the exact phase and magnitude data of measured fields. In reality, this cannot be achieved, due to uncertainties in the field probe measurements, presence of active and passive cables and limited scan areas. Thus, it is attempted to perform a transformation based on an incomplete and uncertain data set. Results of a numerical simulation tool usage for NF to FF transformation based on NF-Scanning system measured data are demonstrated.

Meeting Name

2012 IEEE International Symposium on Electromagnetic Compatibility (2012: Aug. 6-10, Pittsburgh, PA)


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

Far-field; Frequency Ranges; Huygens' Principle; Magnitude Data; Measured Field; near Fields; Near-field; Numerical Evaluations; Probe Measurements; Radiation Problems; Scan Area; Transformation Based; Transformation Techniques; Uncertain Datas; Weak Signals; Antenna Radiation; Computer Simulation; Electromagnetic Compatibility; Uncertainty Analysis; Metadata

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2012