Analyzing the Effect of using Electromagnetic Metamaterials in the Production of Plane Spiral Orbital Angular Momentum Waves (PSOAM)

Karimzadeh Baee, Roghieh; Darvishi, Reza

doi:10.22075/mseee.2025.38236.1217

Analyzing the Effect of using Electromagnetic Metamaterials in the Production of Plane Spiral Orbital Angular Momentum Waves (PSOAM)

Document Type : Research Article

Authors

Roghieh Karimzadeh Baee ¹

Reza Darvishi ²

¹ Satellite Communication Group, Faculty of Communications Technology, ICT Research Institute, Tehran, Iran.

² Imam Hossein University, Tehran, Iran.

10.22075/mseee.2025.38236.1217

Abstract

The utilization of orbital angular momentum (OAM) presents an effective approach that enables the simultaneous use of multiple channels on a single frequency. Compared with conventional OAM carrier waves—whose three-dimensional radiation pattern resembles a cone with a hollow region at its center—the planar-spiral orbital angular momentum (PSOAM) carrier propagates transversely, making it more suitable for various practical applications. For the first time, the generation of PSOAM waves using a uniform circular array of microstrip antennas based on electromagnetic metamaterials has resulted in a phase pattern distinct from the conventional OAM theory. This study demonstrates that incorporating metamaterials into the antenna array structure facilitates the generation of higher-order OAM modes with fewer elements than conventional antennas. Simulation results indicate that the proposed array achieves approximately a 27% reduction in the number of antenna elements. Furthermore, the introduced antenna exhibits a wide relative bandwidth of 1.93.

Keywords

Orbital angular momentum

Planar spiral orbital angular momentum

Circular array

Electromagnetic metamaterials

Subjects

Communication System

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