An analysis of OAM modes for mm-Wave wireless communications

Orbital Angular Momentum (OAM) has found many applications in optics, radio astronomy etc. but is only recently being considered for radio communication systems. Due to the inherent orthogonality of OAM modes and the theoretically infinite space of discrete states it offers immense potential for designing high capacity wireless communication links, especially at mm-wave radio frequencies where a vast amount of bandwidth is available. Since OAM is fundamentally different from the techniques based on linear momentum of EM waves employed in present day communication systems, its´ properties need to be investigated in detail prior to the actual development of practical OAM communication systems.