Single-Layer SSPP Leaky-Wave Antenna with Circular Polarization Based on the Holographic Technique

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Nader Komjani Nader Komjani; Komjani Nader

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Journal Paper

Paper Information

Journal: JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS Year:2023 | Volume:20 | Issue:3 Page(s): 1-9

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Information Journal Paper

Title

Single-Layer SSPP Leaky-Wave Antenna with Circular Polarization Based on the Holographic Technique

Author(s)

Komjani Nader Komjani" target="_blank">Nader Komjani Nader Komjani | Komjani Nader | Issue Writer Certificate

Keywords

SSPP

leaky-wave antenna

holographic principle

anisotropic metasurface

circular polarization.

Abstract

The present work applies the holographic technique to develop a leaky-wave antenna based on spoof surface plasmon polariton with circular polarization. For the first time, an impedance surface (hologram) with an anisotropic unit cell (with a hollow metallic cross-bars shape) without a ground plane is implemented to control the radiation polarization of the leaky wave structure. We used a combination of optical conversion relations and a particle swarm optimization algorithm to estimate the anisotropy of the proposed unit cell. By changing the dimensions of the cross's two arms and rotation angle, the required components of the surface impedance tensor are determined to realize the hologram. The realized gain, radiation efficiency, sidelobe level, and axial ratio bandwidth are 15.3dBi, 82%, -11dB, and 11.8%, respectively. The maximum scanning angle of was obtained when the frequency varies from f = 16 GHz to f = 18 GHz. The simulations were performed in MATLAB and CST Microwave Studio.

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