High Order Vortex Wave Antenna and Device and Method for Generating and Receiving High Order Vortex Wave
AssigneeXidian University
InventorsLinjun ZHAO, Hailin ZHANG, Fang LIANG
Life of this patent
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Abstract
A high order vortex wave antenna includes N uniform circle array antennas. The uniform circle array antenna includes M antenna array elements distributed uniformly in axial symmetry on a first circle with a radius of r1. Each antenna array element coincides with an adjacent element after rotating around a center of the first circle by an angle of 2π/M Centers of the first circles of all uniform circle array antennas are distributed uniformly in axial symmetry on a second circle with a radius of r2. Each uniform circle array antenna coincides with an adjacent uniform circle array antenna after rotating around a center of the second circle by an angle of 2π/N.
Claims8
A high order vortex wave antenna characterized by comprising N uniform circle array antennas;
- wherein said uniform circle array antenna comprises M antenna array elements distributed uniformly in axial symmetry on a first circle with a radius of r1, and each antenna array element coincides with an adjacent element after rotating around a center of the first circle by an angle of 2π/M;
- and
- centers of the first circles of all uniform circle array antennas are distributed uniformly in axial symmetry on a second circle with a radius of r2, and each uniform circle array antenna coincides with an adjacent uniform circle array antenna after rotating around a center of the second circle by an angle of 2π/N.
A method for generating high order vortex waves, characterized by comprising steps of:
- 1) phase shifting, by the N×M phase shifter, the input signals An(m)(t) to generate signals sn(m)(t);
- wherein n is a count of uniform circle array antennas in the high order vortex wave antennas, n=0, 1, 2 . . . (N−1);
- m is a count of antenna array elements in the uniform circle array antenna, m=0, 1, 2 . . . (M−1);
- 2) grouping signals sn(m)(t) and outputting them to the M×N phase shifter;
- 3) phase shifting, by the M×N phase shifter, signals sn(m)(t), generating and outputting signals yn(m)(t);
- and
- 4) using the signals yn(m)(t) as a stimulation for a mth antenna array element on a nth uniform circle array antenna in the high order vortex wave antenna to generate high order vortex wave signals.
A method for receiving high order vortex waves, characterized by comprising steps of:
- 1) receiving, by a high order vortex wave antenna, high order vortex wave signals, and generating, by a mth antenna array element on a nth uniform circle array antenna, response signals {tilde over (y)}n(m)(t);
- 2) subjecting, by a N mode separator, signals {tilde over (y)}n(m)(t) to N mode separation to obtain signals {tilde over (s)}n(m)(t);
- 3) grouping signals {tilde over (s)}n(m)(t) and inputting them to a Mmode separator;
- 4) subjecting, by a M mode separator, signals {tilde over (s)}n(m)(t) to M mode separation to obtain signals Ãn(m)(t) and obtaining, from signals Ãn(m)(t) modulated information carried by the high order vortex waves.
Dependencies are inferred from the claim text.