Large antennas characterization: Far — Field reconstruction using outdoor transient measurements for narrow and wide band radiating sources

The aim of this work is to get far field radiation patterns for any radiating source from transient acquisition, in a large frequency range. An outdoor transient Ultra-Wideband near-field measurement base has been installed, a single time pulse radiated by the source covers the desired spectrum, and the accurate determination of far field radiations is accomplished by means of cylindrical waves' modal development. This method uses simplified test equipments, easy to be installed, and it reduces measurement costs.