Open AccessCommercial graphene nanoplatelets‐based tunable attenuator
Author(s) -
Yasir M.,
Savi P.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.3669
Subject(s) - attenuator (electronics) , graphene , materials science , attenuation , optoelectronics , microstrip , transmission line , optical attenuator , dynamic range , electrical conductor , optics , electrical engineering , nanotechnology , composite material , physics , engineering , fiber optic sensor , fiber
A commercial graphene nanoplatelets‐based tunable attenuator is proposed. The attenuator comprises of a couple of microstrip lines connected through a gap where the commercial graphene nanoplatelets are drop casted. The transmitted signal through the microstrip line can be varied by an applied DC bias voltage that alters the graphene resistance. The DC resistance of commercially acquired graphene is higher than lab‐grown graphene and so is the resulting minimum attenuation of the transmitted signal. The proposed structure is designed to reduce both the minimum graphene resistance and the transmission. The resultant dynamic range of attenuation is more than twice as compared to other series attenuators designed with lab grown graphene nanoplatelets. The operating frequency of the attenuator is from 1 to 5 GHz with maximum dynamic range of attenuation almost 10 dB.