Orbital angular momentum (OAM) antenna for generating OAM beams

A network device comprising:

• an orbital angular momentum (OAM) antenna comprising:
• a plurality of concentric antenna arrays, each of the antenna arrays corresponding to one or more OAM orders and being comprised of a different respective set of antenna elements arranged at a different respective radius, a difference between respective radii of each pair of adjacent antenna arrays of the plurality of concentric antenna arrays decreasing as antenna array indexes associated with the respective pair of adjacent antenna arrays increase, each of the antenna array indexes satisfying a threshold index condition;
• and
• a plurality of phase shifters, each of the phase shifters corresponding to a different respective antenna array of the plurality of concentric antenna arrays and configured to trigger the respective set of antenna elements of the corresponding antenna array to generate a respective OAM beam;
• at least one processor;
• and
• at least one memory communicatively coupled with the at least one processor and storing instructions that, when executed by the at least one processor, cause the network device to transmit a signal via the OAM beams.

A method for wireless communication performed by an orbital angular momentum (OAM) antenna, comprising:

• receiving, from a data source, a signal at a plurality of concentric antenna arrays of the OAM antenna, each of the antenna arrays corresponding to one or more OAM orders and being comprised of a different respective set of antenna elements arranged at a different respective radius, a difference between respective radii of each pair of adjacent antenna arrays of the plurality of concentric antenna arrays decreasing as antenna array indexes associated with the respective pair of adjacent antenna arrays increase, each of the antenna array indexes satisfying a threshold index condition;
• controlling a timing of the different respective set of antenna elements;
• and
• transmitting the signal via an OAM beam generated from each of the antenna arrays based on the controlled timing.