Phased Array for Control of Orbital Angular Momentum in Microwave Systems

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.

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Beam scanning of orbital angular momentum electromagnetic wave using annular phased array

2015 Asia-Pacific Microwave Conference (APMC) ◽

10.1109/apmc.2015.7411675 ◽

2015 ◽

Cited By ~ 1

Author(s):

Zhiwei Sun ◽

Shu Wei ◽

Junming Zhao ◽

Yijun Feng

Keyword(s):

Angular Momentum ◽

Electromagnetic Wave ◽

Orbital Angular Momentum ◽

Phased Array ◽

Beam Scanning

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

OSA Continuum ◽

10.1364/osac.412607 ◽

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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Defining Effective Gain for Evaluation of Orbital Angular Momentum Links

Advances in Technology Innovation ◽

10.46604/aiti.2021.6922 ◽

2021 ◽

Vol 6 (2) ◽

pp. 117-127

Author(s):

Elaheh Shamoushaki ◽

Hadi Aliakbarian

Keyword(s):

Angular Momentum ◽

Radio Frequency ◽

Radiation Pattern ◽

Orbital Angular Momentum ◽

Phased Array ◽

Communication Link ◽

Phased Array Antennas ◽

Array Antennas ◽

Link Budget ◽

First Time

In this paper, a communication link based on circular phased array antennas generating orbital angular momentum (OAM) beams at radio frequency is investigated. The presence of a null in the radiation pattern of OAM antennas is the main drawback of them. This problem makes it difficult to establish a telecommunication link using OAM systems and calculate the link budget for such a system. To solve this problem, we have defined two new gain parameters by using Friis Transmission Equation. The new formulas can help to calculate the effective gain of OAM antennas. Also, we have defined the effective OAM gain in detail for the first time in order to evaluate the performance of the OAM links. By using the proposed formulas, a capable and secure link based on the orthogonality of OAM beams can be designed.

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