Now showing items 1-9 of 9

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

    Suessmeier, Christoph; Schaeffer, Stephan; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Stock, Daniel; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Restricted access - publisher's policy
    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.
  • Graphene-based terahertz antennas for area-constrained applications 

    Abadal Cavallé, Sergi; Hosseininejad, Seyed Ehsan; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    Graphene is enabling a plethora of applications in a wide range of fields due to its unique electrical, mechanical, and optical properties. In the realm of wireless communications, graphene shows great promise for the ...
  • MAC-oriented programmable terahertz PHY via graphene-based Yagi-Uda antennas 

    Hosseininejad, Seyed Ehsan; Abadal Cavallé, Sergi; Neshat, Mohammad; Faraji-Dana, Reza; Lemme, Max; Suessmeier, Christoph; Bolívar, Peter Haring; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    Graphene is enabling a plethora of applications in a wide range of fields due to its unique electrical, mechanical, and optical properties. In the realm of wireless communications, graphene shows great promise for the ...
  • Material-dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures 

    Suessmeier, Christoph; Abadal Cavallé, Sergi; Stock, Daniel; Schaeffer, Stephan; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Reconfigurable THz plasmonic antenna based on few-layer graphene with high radiation efficiency 

    Hosseininejad, Seyed Ehsan; Neshat, Mohammad; Faraji-Dana, Reza; Lemme, Max; Bolívar, Peter Haring; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José; Abadal Cavallé, Sergi (2018-07-28)
    Article
    Open Access
    Graphene plasmonic antennas possess two significant features that render them appealing for short-range wireless communications, notably, inherent tunability and miniaturization due to the unique frequency dispersion of ...
  • Reprogrammable graphene-based metasurface mirror with adaptive focal point for THz imaging 

    Hosseininejad, Seyed Ehsan; Rouhi, Kasra; Neshat, Mohammad; Faraji-Dana, Reza; Cabellos Aparicio, Alberto; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José (Nature, 2019-02-27)
    Article
    Open Access
    Recent emergence of metasurfaces has enabled the development of ultra-thin flat optical components through different wavefront shaping techniques at various wavelengths. However, due to the non-adaptive nature of conventional ...
  • Study of hybrid and pure plasmonic terahertz antennas based on graphene guided-wave structures 

    Hosseininejad, Seyed Ehsan; Alarcón Cot, Eduardo José; Komjani, Nader; Abadal Cavallé, Sergi; Lemme, Max; Bolívar, Peter Haring; Cabellos Aparicio, Alberto (2017-06-01)
    Article
    Open Access
    Graphene is a unique material for the implementation of terahertz antennas due to extraordinary properties of the resulting devices, such as tunability and compactness. Existing graphene antennas are based on pure plasmonic ...
  • Surveying of pure and hybrid plasmonic structures based on graphene for Terahertz Antenna 

    Hosseininejad, Seyed Ehsan; Alarcón Cot, Eduardo José; Komjani, Nader; Abadal Cavallé, Sergi; Lemme, Max; Bolívar, Peter Haring; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2016)
    Conference report
    Restricted access - publisher's policy
    Graphene is a unique material for the implementation of terahertz antennas due to extraordinary properties of the resulting devices, such as tunability and compactness. Existing graphene antennas are based on pure plasmonic ...
  • Terahertz dielectric resonator antenna coupled to graphene plasmonic dipole 

    Hosseininejad, Seyed Ehsan; Neshat, Mohammad; Faraji-Dana, Reza; Abadal Cavallé, Sergi; Lemme, Max; Bolívar, Peter Haring; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    This paper presents an efficient approach for exciting a dielectric resonator antenna (DRA) in the terahertz frequencies by means of a graphene plasmonic dipole. Design and analysis are performed in two steps. First, the ...