Integrated graphene patch antenna for communications at THz frequencies

Graphene is an attractive material for communications in the THz range due to its ability to support surface plasmon polaritons. This enables a graphene antenna to be smaller in size than its metallic counterpart. In addition, the possibility to control the graphene conductivity during operation by an applied bias leads to the tunability of the resonant frequency of graphene antennas. Graphene-based antennas integrated into transceivers working at THz frequencies may lead to faster and more efficient devices. In this work, we design and simulate a graphene patch antenna that can be integrated into transceivers by through-substrate vias. The tuning of the resonant frequency is also studied by simulations.This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement N° 863337.Peer ReviewedPostprint (author's final draft

Analysis of a plasmonic graphene antenna for microelectronic applications

Graphene offers a large potential to downscale antennas to the micrometer scale, due to its special dispersion relation and its ability to support plasmons in the THz frequency range. For an adequate performance of the antenna, graphene material quality is crucial. A high chemical potential, as well as a high relaxation time are needed. Fabrication and processing, as well as the material environment are very critical to achieve a high graphene quality and a good emissivity of the antenna. We demonstrate the simulation, fabrication and analysis of a graphene based plasmonic antenna structure acting as an active THz emission device.Peer ReviewedPostprint (published version

A graphene based plasmonic antenna design for communication in the THz regime

We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.Peer ReviewedPostprint (published version

Analysis of a plasmonic graphene antenna for microelectronic applications

Graphene offers a large potential to downscale antennas to the micrometer scale, due to its special dispersion relation and its ability to support plasmons in the THz frequency range. For an adequate performance of the antenna, graphene material quality is crucial. A high chemical potential, as well as a high relaxation time are needed. Fabrication and processing, as well as the material environment are very critical to achieve a high graphene quality and a good emissivity of the antenna. We demonstrate the simulation, fabrication and analysis of a graphene based plasmonic antenna structure acting as an active THz emission device.Peer Reviewe

Material-dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures

Graphene supports surface plasmon polaritons with comparatively slow propagation velocities in the THz region, which becomes increasingly interesting for future communication technologies. This ability can be used to realize compact antennas, which are up to two orders of magnitude smaller than their metallic counterparts. For a proper functionality of these antennas some minimum material requirements have to be fulfilled, which are presently difficult to achieve, since the fabrication and transfer technologies for graphene are still evolving. In this work we analyze available graphene materials experimentally and extract intrinsic characteristics at THz frequencies, in order to predict the dependency of the THz signal emission threshold as a function of the graphene relaxation time Tr and the chemical potential µc.Peer ReviewedPostprint (published version

Material-dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures

Graphene supports surface plasmon polaritons with comparatively slow propagation velocities in the THz region, which becomes increasingly interesting for future communication technologies. This ability can be used to realize compact antennas, which are up to two orders of magnitude smaller than their metallic counterparts. For a proper functionality of these antennas some minimum material requirements have to be fulfilled, which are presently difficult to achieve, since the fabrication and transfer technologies for graphene are still evolving. In this work we analyze available graphene materials experimentally and extract intrinsic characteristics at THz frequencies, in order to predict the dependency of the THz signal emission threshold as a function of the graphene relaxation time Tr and the chemical potential µc.Peer Reviewe

A graphene based plasmonic antenna design for communication in the THz regime

We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.Peer Reviewe