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- Title
Efficiency enhancement of a circularly polarised slotted waveguide antenna array for Sub-THz applications.
- Authors
Pillai, Jyothishree; Prajapati, Jitendra; Upadhayay, Madhur Deo
- 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 ∘ 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 ∘ to ± 60 ∘ .
- Subjects
SLOT antennas; WAVEGUIDE antennas; ANTENNA arrays; COPLANAR waveguides; SLOT antenna arrays
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 5, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-024-06454-z