Title :
Peculiar Properties of Loop Nanoantennas
Author :
Locatelli, Arturo
Author_Institution :
Dipt. di Ing. dell´Inf., Univ. degli Studi di Brescia, Brescia, Italy
Abstract :
The distinguishing features of circular loop nanoantennas based on cylindrical nanorods are thoroughly investigated by using numerical simulations. In particular, resonances of the input impedance are related to the resonant behavior of the plasmonic mode of the straight nanowire, and the phenomena of strong field confinement into a small gap region and tuning of the scattering strength are analyzed in detail. Moreover, radiation pattern and polarization properties of loop nanoantennas are described, and a careful comparison with the characteristics of optical dipoles is carried out. Circuit models are widely used throughout this paper to predict and justify the behavior of the nanostructure.
Keywords :
antenna radiation patterns; loop antennas; nanophotonics; numerical analysis; circuit models; circular loop nanoantennas; cylindrical nanorods; numerical simulations; optical dipoles; plasmonic mode; polarization properties; radiation pattern; resonant behavior; scattering strength; small gap region; straight nanowire; strong field confinement; Antennas; Impedance; Integrated circuit modeling; Optical resonators; Plasmons; Radio frequency; Resonant frequency; Nanoantennas; integrated nanophotonic systems; optical interconnects; plasmonics;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2011.2167603
