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Optical and Quantum Electronics

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01.05.2024

Efficiency enhancement of a circularly polarised slotted waveguide antenna array for Sub-THz applications

verfasst von: Jyothishree Pillai, Jitendra Prajapati, Madhur Deo Upadhayay

Erschienen in: Optical and Quantum Electronics | Ausgabe 5/2024

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Abstract

This manuscript presents a simple and compact, high gain & highly efficient wideband circularly polarised slotted waveguide antenna array based on WR-3 waveguide. The proposed geometry is based on a cross-slot-based element capable of providing a wide circular polarisation bandwidth. These slots are connected to each other through horizontal slots. Hexagonal slots of finite circumradii are cut at the center of the cross slots along with a series feed across the WR-3 waveguide, which results in a gain of up to 14.4 dBi and a fractional bandwidth of 27.2%. Furthermore, a grooved metal cabin flared at 45\(^\circ\) is used as an enclosure, which enhances the gain. The grooved metal cabin provides a state-of-the-art gain, efficiency, and fractional bandwidth of 17.8dBi, 98.6%, and 34.5%, respectively. It also facilitates beam scanning over a span from ±34\(^\circ\) to ± 60\(^\circ\).

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Titel: Efficiency enhancement of a circularly polarised slotted waveguide antenna array for Sub-THz applications
verfasst von: Jyothishree Pillai
Jitendra Prajapati
Madhur Deo Upadhayay
Publikationsdatum: 01.05.2024
Verlag: Springer US
Erschienen in: Optical and Quantum Electronics / Ausgabe 5/2024
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI: https://doi.org/10.1007/s11082-024-06454-z

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