Receiving and resolving a composite orbital angular momentum beam

摘要

A transmit antenna or antennas can be configured to transmit a composite orbital angular momentum (OAM) radio frequency (RF) beam comprising a plurality of individual OAM RF signals each having a different OAM mode. An array of antennas for receiving and resolving the composite OAM beam into the individual OAM signals can be located entirely within a relatively small sector of a far field pattern of the composite OAM beam. A processing module connected to the antennas of the receive array can resolve the composite OAM beam into its individual OAM signals using angular resolution. The transmit antenna can transmit the individual OAM signals—and thus the composite OAM beam—as full OAM signals or partial-beam OAM signals.

主权项

1. A process for resolving a composite orbital angular momentum (OAM) beam comprising multiple OAM signals each having a different one of a plurality of unique OAM modes, said process comprising:
receiving at an antenna array comprising a plurality of receive antennas said composite OAM beam propagating along an axis, wherein said antenna array is locate a distance RA from said axis; and separating said OAM beam into said OAM signals utilizing a first phase difference of said composite OAM beam as received at ones of said receive antennas.