Implementation of an Ultra-Low Profile High-Purity OAM Generator

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electronics Letters Pub Date : 2025-02-14 DOI:10.1049/ell2.70174

Songtao Peng, Youlei Pu

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引用次数: 0

Abstract

This letter presents an orbital angular momentum (OAM) generator based on a uniform circular array (UCA) micro-integrated structure that produces ultra-high purity OAM vortex beams at Ka-band while maintaining a low profile. Utilizing cut-angle microstrip patch elements, the UCA excites circularly polarized waves and generates OAM modes with ( $l = \pm 1$ ) through specific amplitude and phase signal inputs. A key feature of this design is the integration of a substrate-integrated waveguide (SIW) radial feed network with the UCA, significantly lowering fabrication costs and reducing the overall thickness to only 1.1 mm (0.11 $λ_{0}$ at 30.0 GHz). Measurements of the Ka-band prototype reveal an OAM mode purity of 93% for ( $l = + 1$ ) and a 10 dB bandwidth of approximately 1.8 GHz.

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来源期刊

Electronics Letters 工程技术-工程：电子与电气

CiteScore

2.70

自引率

0.00%

发文量

268

审稿时长

3.6 months

期刊介绍： Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO