Source reconstruction using equivalent currents

Source reconstruction using equivalent currents

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Post-processing Techniques in Antenna Measurement — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

In this chapter the source reconstruction using equivalent currents is a mature technique with a number of interesting applications such as field transformation (NF-FF/NF-NF), electromagnetic diagnostics, design optimization, general source modeling, and antenna synthesis. Its formulation and numerical solution are based on the widely popular MoM and therefore inherits its well-known properties such as accuracy and flexibility and profits directly from advanced techniques developed around MoM such as low-frequency, large-scale, and multi-resolution solvers to mention some. It has been found that the DEqF provides robust results and the best accuracy in real-world situations both for diagnostics and for field transformations, while the simpler SEqFs could be of interest in order to reduce memory and time requirements when the loss in accuracy is acceptable, or when dealing with data from simulation.

Chapter Contents:

  • 2.1 Introduction
  • 2.2 Formulation of the source reconstruction problem
  • 2.2.1 Application of the equivalence theorem
  • Zero interior fields—Love's equivalence
  • Jeq-only/Meq-only formulation
  • 2.2.2 Uniqueness of the solution to the reconstruction problem
  • 2.3 Numerical solution of the source reconstruction problem
  • 2.3.1 Discretization
  • 2.3.2 Setup of the linear system
  • 2.3.3 Application of existing Method of Moments codes in source reconstruction
  • 2.4 Probe correction
  • 2.4.1 Reciprocity and the reception formula
  • 2.4.2 Formulation of the source reconstruction problem with probe correction
  • 2.5 Application examples
  • 2.5.1 Application as an investigation and diagnostic tool
  • 2.5.2 Application in field transformations
  • Near-field to near-field
  • Near-field to far-field
  • 2.5.3 Array antenna synthesis
  • 2.6 Numerical tests on the accuracy of source reconstruction
  • 2.7 Conclusions and outlook
  • References

Inspec keywords: optimisation; antenna testing; method of moments; antenna radiation patterns; near-field communication

Other keywords: electromagnetic diagnostics; general source modeling; equivalent currents; mature technique; numerical solution; multiresolution solvers; antenna synthesis; source reconstruction; popular MoM; design optimization; field transformation

Subjects: Antenna theory; Numerical analysis; Optimisation techniques; Single antennas

Preview this chapter:
Zoom in

Source reconstruction using equivalent currents, Page 1 of 2

| /docserver/preview/fulltext/books/ew/sbew529e/SBEW529E_ch2-1.gif /docserver/preview/fulltext/books/ew/sbew529e/SBEW529E_ch2-2.gif

Related content

This is a required field
Please enter a valid email address