Genetic algorithm based method for predicting far-field radiated emissions from near-field measurements

A novel method for predicting the radiated emissions of a device from near-field measurements is presented. It is based on the substitution (using a Genetic Algorithm) of the original device by an equivalent set of elemental dipoles, which radiates the same near-field (and therefore, far-field). Since the field produced by a dipole is known, the far-field radiation of the actual radiating source can be calculated. This avoids the use of large semianechoic chambers to measure far-field since it is deducted from the near one. Moreover, this method allows the identification of the radiating sources. Simulations show the viability and usefulness of the new method.