Phased arrays with reduced number of phase shifter bits for polarization and pointing control

This paper presents two electronically steered phased array approaches allowing to reduce the number of phase shifter bits required to control steering and polarization. The first approach is based on particular combination of the phase shifters arrangement and elements rotation, while the second introduces a different approach with a combination of simplified phasing approach and aperiodic lattice allowing the number of bits to be reduced to one only. Both approaches have been validated through full scale implementation and measurements results are presented in this paper.