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The Source Reconstruction Method

The source reconstruction method (SRM) is a technique developed for antenna diagnostics and for carrying out near‐field to far‐field transformation. This chapter presents two different methods: one that deals with the equivalent magnetic current and the second that deals with the equivalent electric current. It also presents the examples to illustrate the applicability and accuracy of the proposed methodology using either of the equivalent currents and applied to experimental data. This methodology is used for near‐field to near/far‐field transformations for arbitrary near‐field geometry to evaluate the safe distance for commercial antennas followed by some conclusions and a list of references. Antenna diagnostic methods based on the analysis of the near fields close to the antenna surface are becoming of great interest for antenna manufacturers. The near‐field measurement of a large antenna is not only very time consuming, but cumbersome because of measuring the fields over certain large canonical surfaces with high spatial accuracy.