Techniques to Create Shaped Scanned Beams with Leaky-Wave Antennas

It is reported a comprehensive summary of the different techniques which can be used to synthesize scanned shaped-beam radiation patterns using leaky-wave antennas. The different approaches are compared in terms of design and structural complexity, as well as the flexibility to control the radiation level inside the desired angular sector and the rejection outside. The far-field radiation patterns of each approach are connected with their associated near fields to provide some physical insight on the different mechanisms.