2022/08/02 by Konstantinos Dovelos, Stylianos D. Assimonis, Dovelos, Konstantinos +6
Computer Science · Engineering · Mathematics · #Antenna (radio) #Antenna Design and Analysis #Antenna Design and Optimization #Computational physics #Computer science #Conjugate gradient method #Constraint (computer-aided design) #Dipole #Dipole antenna #Effective radiated power #FOS: Computer and information sciences #FOS: Electrical engineering #Geometry #Information Theory (cs.IT) #Isotropy #Mathematical analysis #Mathematical optimization #Mathematics #Microwave Engineering and Waveguides #Optics #Physics #Power (physics) #Radiation #Radiation pattern #Signal Processing (eess.SP) #Telecommunications #Topology (electrical circuits) #Wavelength #cs.IT #eess.SP #electronic engineering #information engineering #math.IT
paper · pdf · doi:10.48550/arxiv.2208.01422
published in arXiv (Cornell University) (Cornell University) · To appear in 2022 IEEE GLOBECOM
arxiv created 2022/08/02 · openalex publication_date 2022/08/02 · arxiv updated 2022/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Dense arrays can facilitate the integration of multiple antennas into finite volumes. In addition to the compact size, sub-wavelength spacing enables superdirectivity for endfire operation, a phenomenon that has been mainly studied for isotropic and infinitesimal radiators. In this work, we focus on linear dipoles of arbitrary yet finite length. Specifically, we first introduce an array model that accounts for the sinusoidal current distribution (SCD) on very thin dipoles. Based on the SCD, the loss resistance of each dipole antenna is precisely determined. Capitalizing on the derived model, we next investigate the maximum achievable rate under a fixed power constraint. The optimal design entails conjugate power matching along with maximizing the array gain. Our theoretical analysis is corroborated by the method of moments under the thin-wire approximation, as well as by full-wave simulations. Numerical results showcase that a super-gain is attainable with high radiation efficiency when the dipole antennas are not too short and thin.