Figure 1
From: Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
Schematic setup of the graphene arcs. In the dipole model, all of the arc’s charges are concentrated at a single point and traverse a semicircular trajectory at a radius rarc. The motion of the charges is expected to produce cyclotron radiation at frequencies inversely proportional to rarc. For the finite element DC simulation (1), a constant 1 V was applied. For the finite element RF simulation (2), signals at 4 GHz, 10 GHz, and 40 GHz of 1 V amplitude were applied to port 1.
