VORTEX ELECTROMAGNETIC WAVES: RADIATION, RECEIVING, PERSPECTIVES OF APPLICATION

A review of achievements in the field of research of electromagnetic waves with spiral phase front and their applications is presented. Known methods of radiation and receiving of such waves are considered, as well as their application to increase the efficiency of frequency spectrum use in radio communication systems due to simultaneous transmission of signals on several vortex modes with different angular indices, to improve the performance of radar systems with synthetic aperture by obtaining additional information, methods of reducing backscattering of radar objects. The ways of further research are discussed.