Abstract
The microwave transmission properties of printed graphene
are studied by measuring different length graphene
coplanar wave guides up to 10 GHz and by modelling this
behaviour with simple transmission line models. The
graphene coplanar wave guide is printed on a PET ST 506
flexible substrates by screen printing method. Vorbeck
inks S301 were used in the printing process. 10 and 30 mm
long graphene transmission line samples were attached on
FR4 test boards and measured. These two graphene lines
were modelled with lumped equivalent circuits with
scalable parameters. Two equivalent circuit approaches
were compared and the high frequency fits suggest that a
simple model for graphene conductivity is not sufficient.
High frequency behaviour is not possible to model with a
bulk conductor but a capacitive path has to be added
lowering the high frequency conductivity. This is
probably a result of the flake structure of printed
graphene.
| Original language | English |
|---|---|
| Pages (from-to) | 9339-9342 |
| Journal | Journal of Nanoscience and Nanotechnology |
| Volume | 17 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- graphene
- radio frequency
- RF
- transmission line
- RF modelling
- printed graphene
- flake
- capacitive coupling
- OtaNano