Open AccessGraphene-Based Electronically Tuneable Microstrip Attenuator
Author(s) -
Luca Pierantoni,
Davide Mencarelli,
Maurizio Bozzi,
Riccardo Moro,
Stefano Bellucci
Publication year - 2014
Publication title -
nanomaterials and nanotechnology.
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.412
H-Index - 21
ISSN - 1847-9804
DOI - 10.5772/58758
Subject(s) - attenuator (electronics) , graphene , materials science , microstrip , microwave , optoelectronics , conductor , resistor , electrical impedance , insertion loss , voltage , electrical conductor , optical attenuator , optics , electrical engineering , attenuation , nanotechnology , telecommunications , computer science , physics , composite material , engineering , fiber optic sensor , fiber
This paper presents the design of a graphene-based electronically tuneable microstrip attenuator operating at a frequency of 5 GHz. The use of graphene as a variable resistor is discussed and the modelling of its electromagnetic properties at microwave frequencies is fully addressed. The design of the graphene-based attenuator is described. The structure integrates a patch of graphene, whose characteristics can range from being a fairly good conductor to a highly lossy material, depending on the applied voltage. By applying the proper voltage through two high-impedance bias lines, the surface resistivity of graphene can be modified, thereby changing the insertion loss of the microstrip attenuator