Title :
Design of a Beam Reconfigurable THz Antenna With Graphene-Based Switchable High-Impedance Surface
Author :
Huang, Yi ; Wu, Lin-Sheng ; Tang, Min ; Mao, Junfa
Author_Institution :
Key Lab. of Minist. of Educ. for Res. of Design & Electromagn. Compatibility of High Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China
fDate :
7/1/2012 12:00:00 AM
Abstract :
In this paper, a new beam reconfigurable antenna is proposed for THz application, which is based on a switchable high-impedance surface (HIS) using a single-layer graphene. The effects of impurity density and gate voltage on the conductivity of graphene are utilized, and the switchable reflection characteristic of the graphene-based HIS is observed. Then the THz antenna is designed over this switchable HIS. By applying different voltages for different rows of HIS units, the antenna beam can be reconfigurable. The performance of the antenna is analyzed with its reflection coefficient, radiation pattern, and input impedance. The radiation beam of the antenna can vary in a range of ±30° as demonstrated by the simulated results.
Keywords :
antenna radiation patterns; graphene; millimetre wave antennas; C; HIS units; THz application; antenna beam; beam reconfigurable THz antenna; gate voltage; graphene-based HIS; graphene-based switchable high-impedance surface; impurity density; input impedance; radiation beam; radiation pattern; reflection coefficient; single-layer graphene; switchable reflection characteristic; Antenna radiation patterns; Conductivity; Impedance; Reflection; Surface impedance; Switches; Beam reconfigurable antenna; THz; graphene; high-impedance surface (HIS); switchable;
Journal_Title :
Nanotechnology, IEEE Transactions on
DOI :
10.1109/TNANO.2012.2202288
