Effects of array's digital beam forming and digital polarization synthesis sequence on the synthesis results

A polarized beamforming method of antenna array is addressed here. In this method, digital polarization synthesis (DPS) and digital beam forming (DBF) are processed separately in sequence. It synthesizes linearly-polarized antenna array into a circularly-polarized antenna whose main beam can scan in azimuth direction. The synthesis process and how the sequence affect the results are both expressed. It can be derived that with DPS-DBF (DPS first and DBF next), the beam is more smooth and has a better circular polarization in the main beam. This method can be used in solar radio observations and other systems that require wideband polarization measurements.