Design of efficient terahertz antennas: Carbon nanotube versus gold

Author

Choi, Sangjo ; Sarabandi, Kamal

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA

fYear

2010

fDate

11-17 July 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, by using scalability of equivalent circuit of single-wall carbon nanotube (SWNT) in its bundle structure, bundled carbon nanotube (CNT) are modeled by the macroscopic resistive sheet. The numerical simulation implements the boundary condition of the surface resistivity. An anisotropic resistive sheet model to represent bundled CNTs electromagnetically is presented. Then, a numerical simulation using method of moments (MoM) is developed to calculate radiation efficiencies of resonant strip antennas made up of bundled CNT and thin gold film. The radiation efficiencies are compared as a function of frequencies and number density of bundled CNT to find a crossover frequency where CNT antenna outperforms the thin gold film antenna.

Keywords

anisotropic media; carbon nanotubes; dipole antennas; electrical resistivity; equivalent circuits; method of moments; terahertz wave devices; anisotropic resistive sheet; boundary condition; bundled carbon nanotube; efficient terahertz antenna; equivalent circuit; macroscopic resistive sheet; method of moments; radiation efficiency; resonant strip antennas; single wall carbon nanotube; surface resistivity; Carbon nanotubes; Dipole antennas; Films; Gold; Resistance; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE

Conference_Location

Toronto, ON

ISSN

1522-3965

Print_ISBN

978-1-4244-4967-5

Type

conf

DOI

10.1109/APS.2010.5560976

Filename

5560976