Lars Jacob Foged, Microwave Vision Group, Via Castelli Romani 59, 00040 Pomezia (RM), Italy

The source reconstruction, or equivalent source method, provides an accurate near-field representation of any radiating device in terms of equivalent electric and magnetic currents. The equivalent currents can be determined from measured near- or far-field data through a post-processing step involving the solution of an integral equation. The equivalent currents constitute an accurate 3D electromagnetic model, maintaining near and far field properties of the measured device. A newly created link, enable the import of such models into several commercial computational electromagnetic (CEM) solvers in the form of a near-field Huygens box.

The tutorial cover the application of the link to the computational analysis of antenna placement on large structures, and electromagnetic compatibility (EMC) using commercially available near-field measurement systems, post-processing, and CEM tools. Application examples are discussed in detail:

  1. Antenna placements on larger complex structures,
  2. Pre-compliance emission analysis of a printed circuit board (PCB). Experimental validations of the computational processes are shown from measurement results.

The tutorial covers the following topics:

  1. Introduction to the equivalent source/current method
    • Near Field measurement techniques
    • Equivalent source/current processing of near field data
  2. Huygens Box link to computational tools and validation scenarios
  3. Source antenna measurement and post-processing issues
    • “Free space” antenna source
    • Flush mounted antenna applications
  4. Application examples
    • Radiation of flush mounted small antenna in complex scenario
    • Emission analysis PCB board in realistic scenarios (EMC)
  5. Discussion, Next Steps and Conclusion

About the Presenter

Lars Jacob Foged was born in Viborg, Denmark in 1966. He received his B.Sc from Aarhus Teknikum, Denmark in 1988 and M.Sc. from California Institute of Technology, USA in 1990. Both degrees in Electrical Engineering. He became a “graduate trainee” of the European

Space Agency in the Netherlands and spent the following ten years designing antennas for high performance communication and navigation satellites. In 2001, he joined SATIMO and founded the branch office in Italy. Since then, he has held different technical leadership positions in SATIMO and later Microwave Vision Group. He is currently the scientific director of Microwave Vision Group and associate director of Microwave Vision Italy.

His research relates to numerical techniques and post-processing issues associated with EMC, antenna design and measurement techniques.

He was responsible for the EURAAP working group on antenna measurements and a member of the delegate assembly from 2009 to 2012. He was vice-chair of the Eucap 2011 conference in Rome and industrial chair of the Eucap 2012 and 2014 conference in Prague and Den Haag. Since 2006, he is a member of the board of the European School of Antennas (ESOA), and technical responsible and teacher in the biannual antenna measurement course.

He is a senior member of IEEE, and secretary of the IEEE antenna standards committee and near-field working group since 2004. He became an Edmond S. Gillespie Fellow of AMTA in 2012, and in 2013 he and his colleagues received the AMTA “Best Technical Paper Award”. Time permitting he is an occasional reviewer on the IEEE Antennas and Wireless Propagation Letters and IEEE Transactions on Antennas and Propagation.

He has authored and co-authored more than 170 journal and conference papers on antenna design and measurement topics, contributed to 3 books and standards, and holds 4 patents.