Beam-scanning orbital angular momentum circular leaky-wave antenna with a half-mode corrugated substrate integrated waveguide
This letter presents a novel circular leaky-wave antenna (CLWA) on a half-mode inter-digitated capacitor based corrugated substrate integrated waveguide (HM-IDC-CSIW) to produce a beam-scanning orbital angular momentum (OAM) wave. Longitudinal radiating slots in a conventional LWA have been translated into an arc-shaped slot for this CLWA. An array of arc-shaped slots is then used to produce OAM mode 1 from 17 to 21 GHz, while producing a beam-scanning of ± 30º in the azimuth plane. The measured results of the antenna confirm a gain of 12 to 14.2 dBi throughout the frequency band while maintaining an efficiency >70% and a high OAM mode purity. Such OAM-based antennas with frequency-controlled beam-scanning can be used for secure communications and to create imaging systems that can sense in different directions simultaneously.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Antennas and Wireless Propagation LettersVolume
23Issue
1Pages
44 - 48Publisher
Institute of Electrical and Electronics Engineers (IEEE)Version
- AM (Accepted Manuscript)
Rights holder
© IEEEPublisher statement
© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Acceptance date
2023-09-15Publication date
2023-09-19Copyright date
2023ISSN
1536-1225eISSN
1548-5757Publisher version
Language
- en
