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Beam steering for OAM beams using time-modulated circular arrays

Beam steering for OAM beams using time-modulated circular arrays

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The theory of time-modulated circular arrays in respect of generating orbital angular momentum (OAM) beams at harmonic frequencies is analysed. Without using expensive phase shifters in phased arrays, beam steering for OAM beams is achieved using switches connected to array elements. The model of an eight-element time-controlled circular array is derived with the method of time-modulation beam steering techniques. Simulation results show that beam steering for OAM beams is realised, which indicates the effectiveness of the proposed method.

References

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      • 4. Xie, G.D., Yan, Y., Zhao, Z., et al: ‘Tunable generation and angular steering of a millimeter-wave orbital-angular-momentum beam using differential time delays in a circular antenna array’. IEEE Int. Communications Conf., Kuala Lumpur, Malaysia, May 2016, pp. 16, doi: 10.1109/ICC.2016.7511072.
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