Open AccessAnalysis of the optical properties of wire antennas with displaced terminals
Author(s) -
Andrea Locatelli
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.009504
Subject(s) - optics , antenna (radio) , wavelength , random wire antenna , physics , electrical impedance , surface wave , acoustics , materials science , dipole antenna , telecommunications , computer science , antenna efficiency , quantum mechanics
An analysis of the peculiar features of optical wire antennas with displaced terminals is presented. Full-wave simulations and a semianalytical technique based on Pocklington's equation are used in order to systematically study the behavior of input impedance and field enhancement at the antenna terminals when the feed-gap region is shifted with respect to the center of the wire. A simple analytical model based on the evaluation of the effective wavelength of the propagating surface wave is also suggested for the interpretation of the results.