Near Field Antenna Pattern Measurements on Digital Modulated Signals

A method for measuring the radiation patterns of digital antennas that radiate the broadband modulated signals is proposed. This method is based on the digital processing and mathematical transformations of the signal samples directly in the receiving measurement device. The absence of the need to use the external interfaces to transfer a large amount data to a personal computer enables real-time processing of the results. The theoretical and experimental results are presented.