A dual-band dipole array antenna with fan-beam radiation for biomedical and telecommunications applications

• Published in: Results in engineering Vol. 24; p. 103136
• Main Authors: Barzegari, Rahim, Ghobadi, Changiz, Nourinia, Javad
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2024; Elsevier
• Subjects: Array antenna; Biomedical; Dual-band antenna; Fan-beam; Optimization algorithm; Array antenna; Optimization algorithm; Dual-band antenna; Fan-beam; Biomedical
• ISSN: 2590-1230; 2590-1230
• DOI: 10.1016/j.rineng.2024.103136

This study introduces a new technique for achieving dual-band functionality in a printed dipole antenna with integrated balun feeding without additional elements. By employing an optimization algorithm, the fundamental parameters of the antenna are extracted, resulting in an antenna design that operates effectively in two distinct frequency bands of 2.4–2.5 and 5–6 GHz for WLAN/ISM and biomedical applications. By implementing the proposed design in a two-element array structure, the antenna successfully achieved a fan-beam radiation pattern in both frequencies. The array antenna exhibits fan-beam radiation patterns and peak gains of 6.90 dB and 7.84 dB, respectively, in two frequency bands: 2.06–2.52 GHz and 5.09–5.93 GHz. According to the proposed design, the array antenna has measured half-power beamwidths (HPBWs) of 38.34° and 25.14° in the two frequencies specified. The overall dimensions of the antenna are 1.100λ × 0.563λ × 0.004λ. This research design offers advantages such as smaller dimensions, higher gain, and a more straightforward structure compared to dual-band array antennas with fan beam radiation patterns. •The proposed technique introduces a novel approach to constructing printed dipole antennas, enabling the achievement of dual-band functionality.•The applied optimization algorithm is a mathematical technique used to find the best possible solution (optimum) from a set of feasible solutions for a dual-band dipole antenna.•The primary objective is to discover the most efficient and effective solution for designing a dual-band antenna, including minimizing costs and enhancing performance.•The proposed array antenna with fan-beam radiation patterns and high gains is suitable for biomedical and telecommunications applications.