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A Computational Approach for Estimating the Electric Field of a Radiating Microstrip Patch Antenna using a Magnetic EMC probe

In this paper, we compute the electric field from the measured magnetic field of the antenna based on the surface equivalence principle. According to this principle, any source which emits the electromagnetic fields can be replaced by surface current densities. The proposed method obtains the electric field from measured magnetic field of the antenna using the magnetic probes. This is based on the magnetic field to electric field transformations based on equivalent dipole sources. The method is validated using the microstrip patch antenna operating at 5.8 G Hz. The inverse problem is solved using least square method based on Truncated SVD. On comparing original and reconstructed electric field data, significantly lower relative error is observed.