Application of graphene in passive micro- and millimetre wave components

Graphene was first isolated in 2004 and since numerous application concepts based on graphene have been demonstrated. Graphene has been recognized from the very beginning as a promising candidate for future radio electronics because graphene shows high carrier mobility, excellent mechanical and thermal stability, superior thermal conductivity and exceptional resistance to electro migration. Experimental results from transport measurements show that graphene has a remarkably high mobility at room temperature, with reported values in excess of 106 cm2·V?1·s?1. The carriers in graphene are confined to a layer that is only one atom thick. This allows unprecedented electrostatic confinement, and also makes graphene extremely flexible and transparent. However up to now most of the radio related research focuses very much on development of high frequency graphene transistors. In just a few years, high frequency graphene transistors have reached a performance level rivalling the best semiconductor devices that have over sixty years research effort behind them. However no analog radio circuitry can be built without passive components. In this paper we evaluate opportunities of usage of graphene in passive micro- and millimetre wave components.