We present 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
GRAPHENE AS A TUNABLE RESISTOR / S., Bellucci; M., Bozzi; A., Cataldo; R., Moro; Mencarelli, Davide; Pierantoni, Luca. - STAMPA. - (2014), pp. 17-20. (Intervento presentato al convegno International Semiconductor conference (CAS) 2014 tenutosi a Sinaia (Romania) nel 13-15 Oct. 2014) [10.1109/SMICND.2014.6966380].
GRAPHENE AS A TUNABLE RESISTOR
MENCARELLI, Davide;PIERANTONI, Luca
2014-01-01
Abstract
We present 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 attenuatorI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
