A Low-Divergence Circularly Polarized Dual-Mode OAM Antenna Based on Higher Order Laguerre–Gaussian Modes

Autor:	Yuan-Long Li, Kwai-Man Luk
Rok vydání:	2021
Předmět:	Patch antenna Physics Angular momentum Aperture business.industry Physics::Optics Resonator Circular buffer Optics Surface wave Electrical and Electronic Engineering Antenna (radio) business Excitation
Zdroj:	IEEE Transactions on Antennas and Propagation. 69:5215-5223
ISSN:	1558-2221 0018-926X
Popis:	An open resonator antenna for orbital angular momentum (OAM) generation and dual-mode application is proposed. The excitation of OAM mode is deduced by the open resonator theory and the circular array theory. In the cavity, eight aperture coupled patch antenna elements are used to excite two higher-order Laguerre–Gaussian HE21 modes with a 90° phase difference. Verifying by simulation and experiment, the proposed low-profile antenna can radiate left-hand or right-hand circularly polarized waves of OAM modes $l=\pm 1$ , which have a relatively low divergence angle of ±9° and high gain of around 13 dBi.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::59a082a609acd17da8d7610a32594768 https://doi.org/10.1109/tap.2021.3060028 Zobrazit plný text záznamu