Sampling receiving method for demultiplexing RF track angular momentum mode
A technology of orbital angular momentum and mode demultiplexing, which is applied in the sampling and receiving field of radio frequency orbital angular momentum mode demultiplexing, can solve the problems of inconvenient transportation, installation, difficult preparation, and high cost, and achieves the promotion of practicality and flexible distribution. , reduce the effect of preparation
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[0013] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0014] figure 1 is the intensity distribution diagram of the orbital angular momentum beam with the topological charges l being 2, 3, 4, and the black in the center is the energy zero region. Obviously, the larger the topological charge l is, the larger the radius of the region where the central energy is zero. In order to improve the receiving efficiency, the size of the receiving aperture at the receiving end needs to be selected at the energy of the main lobe of the beam. The more the number of multiplexing channels, the larger the topological charge l, and the larger the receiving aperture of the receiving end. This condition limits the practical application of orbital angular momentum beams.
[0015] figure 2 A model for sampled reception is given. On the plane perpendicular to the main axis of orbital angular momentum beam propagation, take 1 / n arcs of con...
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