Fast Orbital Quantum Modulation Using Orbital Angular Momentum Wave Emitter Based on N-PSK Modulators

Based on Phase Shift Keying modulators architecture and annular array radiating antenna, an efficient OAM emitter is proposed and built with Q-PSK at 2.45 GHz. Once characterized, it exhibits 100 MHz data rate modulation capability. The encoded orbital quantum (or index modulation) only uses three states (for Q-PSK) and four array elements. The received signals also suffer from conventional OAM line of sight links drawbacks, especially OAM “cross-talk” which comes from OAM states non ideal orthogonality in the realized setup.