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A Broadband MS-Based Circularly Polarized Antenna Array Using Sequential-Phase Feeding Network

Pham-Duy, H. and Nguyen-Tien, D. and Nguyen-Ngoc, T. and Tran-Viet, D.-N. and Nguyen-Dinh, T. and Pham, T.D. and Tran-Huy, H. (2024) A Broadband MS-Based Circularly Polarized Antenna Array Using Sequential-Phase Feeding Network. Micromachines, 15 (8). ISSN 2072666X

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Abstract

This paper introduces the design of a circularly polarized metasurface-based antenna array for C-band satellite applications that owns broadband operation and high gain characteristics. The single radiating element comprises a Y-shape patch and an above-placed 2 × 2 unit-cell metasurface. Further improvement in operating bandwidth and broadside gain is achieved by arranging four single elements in a 2 × 2 configuration and a sequential-phase feed network. A prototype has been fabricated and measured to validate the feasibility of the proposed antenna array. The measured operating bandwidth is 20 (4.50–5.50 GHz), which is an overlap between a −10 dB impedance bandwidth of 29.8 (4.50–5.99 GHz) and a 3 dB axial ratio bandwidth of 20 (4.50–5.50 GHz). Across this operating band, the peak broadside gain is 10.5 dBi. Compared with the recently published studies, the proposed array is a prominent design for producing a wide operating bandwidth and relatively high gains while maintaining the overall compact dimensions. © 2024 by the authors.

Item Type: Article
Divisions: Offices > Office of International Cooperation
Identification Number: 10.3390/mi15081051
Uncontrolled Keywords: Antenna arrays; Antenna feeders; Circular polarization; Metamaterial antennas; Microstrip antennas; Microwave antennas; Satellite antennas; Slot antennas, Broadband; Circularly polarized antennas; Circularly-polarized; Feeding networks; Feeding structures; High gain; Metasurface; Microstrip patch; Operating bandwidth; Sequential-phase feeding structure, Bandwidth
URI: http://eprints.lqdtu.edu.vn/id/eprint/11341

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