Title :
Tunable graphene FSS for terahertz applications
Author :
Xiaoqi Zhu ; Lin-Sheng Wu ; Yong-Xin Guo ; Wen Wu
Author_Institution :
Ministerial Key Lab., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
In this paper, a new type of tunable frequency selective surface (FSS) based on single layer graphene for terahertz (THz) applications is proposed. To apply the gate voltage, a metal wire-array is designed. A broad tunable band of 0.68-1.42 THz is achieved by tuning the Fermi level and hence surface conductivity of the graphene layer. In addition, a modulation depth of 78% for reflectance and 70% for transmittance is also obtained in the band of 1.3-1.57 THz. The tunable graphene FSS can be readily applied into THz modulators.
Keywords :
frequency selective surfaces; graphene; surface conductivity; terahertz materials; Fermi level; THz applications; THz modulators; broad tunable band; frequency 0.68 THz to 1.42 THz; gate voltage; metal wire-array; modulation depth; reflectance; single layer graphene; surface conductivity; terahertz applications; transmittance; tunable frequency selective surface; tunable graphene FSS; Conductivity; Educational institutions; Electrodes; Frequency selective surfaces; Graphene; Modulation; Reflectivity;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905379
