scholarly journals Beam steering of orbital angular momentum vortex wave based on planar phased array

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Phased Array ◽  
Beam Steering

scholarly journals Tunable Beam Steering, Focusing and Generating of Orbital Angular Momentum Vortex Beams Using High-Order Patch Array

2019 ◽  
Vol 9 (15) ◽  
pp. 2949 ◽  
Author(s):  
Zhiping Yin ◽  
Qun Zheng ◽  
Kai Guo ◽  
Zhongyi Guo
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Phase Modulation ◽  
Beam Steering ◽  
Phase Shifters ◽  
High Order ◽  
Scanning Angle ◽  
Beam Focusing ◽  
Vortex Beams ◽  
Topological Charges

In this paper, a tunable patch array based on high-order is proposed at the frequency of 300 GHz, achieving active controllable beam steering, focusing and generation of orbital angular momentum vortex beams. It has been demonstrated that the patch array can achieve wide beam scanning angle by controlling the phase of array elements with tunable phase shifters. Meanwhile, beam focusing on the specified position can also be realized by phase modulation of array elements based on the focusing theory. In addition, we also designed a patch array to generate vortex beams with multiple topological charges by high-order modes. The performances show that the patch antenna array we designed has a good application prospect.

An orbital angular momentum acoustic metasurface for underwater defect detection

2021 ◽  
Author(s):  
Qiujun Ma ◽  
Chunyao Lu ◽  
Igor V. Minin ◽  
Oleg V. Minin ◽  
Kangyu Wang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Defect Detection ◽  
Phased Array ◽  
Simple Structure ◽  
Detection Method ◽  
Signal To Noise Ratio ◽  
High Signal ◽  
Reference Library ◽  
Reference Pattern

Abstract Fourier diffraction theorem can rapidly predict scattering characteristics of scatterers. This paper theoretically proposes Orbital Angular Momentum (OAM) to simplify the reference library in the underwater Fourier diffraction theorem. An acoustic metasurface is designed to replace the traditional phased array, meanwhile the underwater defect detection combining OAM and Fourier diffraction theorem is verified in the simulation. This acoustic metasurface has a high signal-to-noise ratio (SNR) when used for underwater defect detection. Compared with the traditional underwater defect detection method, the underwater defect detection method proposed in this paper has the advantages of simple structure and no reference pattern library.

Realization of Beam Steering Based on Plane Spiral Orbital Angular Momentum Wave

2018 ◽  
Vol 66 (3) ◽  
pp. 1352-1358 ◽  
Author(s):  
Shilie Zheng ◽  
Yiling Chen ◽  
Zhuofan Zhang ◽  
Xiaofeng Jin ◽  
Hao Chi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Steering ◽  
Plane Spiral

Beam Steering of Orbital Angular Momentum Vortex Waves with Spherical Conformal Array

2021 ◽  
pp. 1-1
Author(s):  
Shixing Yu ◽  
Na Kou ◽  
Jiheng Jiang ◽  
Zhao Ding ◽  
Zhengping Zhang
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Steering ◽  
Conformal Array

scholarly journals Optical vortex beams with controllable orbital angular momentum using an optical phased array

OSA Continuum ◽  
2020 ◽  
Vol 3 (12) ◽  
pp. 3399
Author(s):  
David R. Gozzard ◽  
James T. Spollard ◽  
Paul G. Sibley ◽  
Lyle E. Roberts ◽  
Daniel A. Shaddock
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Phased Array ◽  
Optical Vortex ◽  
Vortex Beams ◽  
Optical Phased Array
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