Open AccessHigh directivity of the dielectric spherical antennas in 0.2-0.35 THz range
Author(s) -
D. V. Storozhenko,
A. V. Deev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1461/1/012170
Subject(s) - directivity , antenna (radio) , optics , antenna gain , dielectric , dielectric resonator antenna , radiation pattern , terahertz radiation , dipole antenna , radius , antenna efficiency , materials science , dipole , resonator , physics , optoelectronics , telecommunications , engineering , computer science , computer security , quantum mechanics
The article presents the results of numerical simulation by the finite element method of a spherical dielectric resonator with a dipole antenna placed inside. The directional properties of this type of antenna in the 2–4 GHz and 0.2–0.35 THz bands are calculated. It is shown that in a narrow band due to high order Mie resonances, the peak directivity of the antenna can reach values of 12.5 dBi with radiation efficiency of 0.9 and a sphere size of the order of 1.2 λ. A variant of the antenna for the 0.2–0.35 THz range with its placement on a dielectric substrate is proposed, and the dimensional ratios of the structural elements for the narrow-band mode with maximum gain are presented.