Commercial graphene nanoplatelets‐based tunable attenuator. Issue 4 (1st February 2020)

• Record Type: Journal Article
• Authors: Yasir, M.; Savi, P.
• Is Part Of: Electronics letters. Volume 56:Issue 4(2020)
• Page Start: 184
• Page End: 187
• Publication Date: 2020-02-01
• Subjects: microstrip lines -- circuit tuning -- graphene -- attenuators -- nanoelectronics; commercial graphene nanoplatelets‐based tunable attenuator -- microstrip line -- transmitted signal -- lab‐grown graphene -- minimum attenuation -- minimum graphene resistance -- series attenuators -- lab grown graphene nanoplatelets -- DC bias voltage -- frequency 1.0 GHz to 5.0 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2019.3669
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.