Performance enhancement of Vivaldi-shaped planar UWB antenna using a single-layer FSS reflector

Kiani, Saad Hassan; Rafique, Umair; SAVCI, Hüseyin Şerif; Rmili, Hatem; Parchin, Naser Ojaroudi; Algarni, Abeer D.; Elmannai, Hela

Abstract

This work proposes the design of a frequency-selective surface (FSS)-based planar monopole antenna for ultra-wideband (UWB) communication applications. The UWB response is observed by integrating a Vivaldi-shaped slot and by introducing a stepped-like pattern on the bottom edges of the radiating patch, while the back side is composed of a partial ground plane. This configuration results in a broad impedance bandwidth spanning from 3.11 to 20 GHz. For radiation performance enhancement of the proposed antenna, a single-layer UWB FSS reflector is placed beneath the antenna element at an optimized distance. The proposed FSS reflector employs a 3 × 3 array of fractal structure with a unit cell size of 12.25 × 12.25 mm2. The designed FSS reflector exhibits a linear phase response over a frequency range of 3.28 to 14 GHz, with a stop-band transmission coefficient less than -10 dB. The incorporation of the FSS reflector results in an increased gain, elevating it from 1 to 4 dBi at low-band frequencies, while at mid-band frequencies, the gain is increased from 1 to 6 dBi. The structural configuration of the proposed antenna yields directional far-field patterns, making it well-suited for UWB radar applications.

Citation

Kiani, S. H., Rafique, U., SAVCI, H. Ş., Rmili, H., Parchin, N. O., Algarni, A. D., & Elmannai, H. (2024). Performance enhancement of Vivaldi-shaped planar UWB antenna using a single-layer FSS reflector. International journal of electronics and communications = Archiv fur Elektronik und Ubertragungstechnik : AEU, 178, Article 155302. https://doi.org/10.1016/j.aeue.2024.155302

• Journal Article Type: Article
• Acceptance Date: Apr 18, 2024
• Online Publication Date: Apr 27, 2024
• Publication Date: 2024-05
• Deposit Date: May 7, 2024
• Journal: AEU - International Journal of Electronics and Communications
• Print ISSN: 1434-8411
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 178
• Article Number: 155302
• DOI: https://doi.org/10.1016/j.aeue.2024.155302
• Public URL: http://researchrepository.napier.ac.uk/Output/3634767