Dielectric Rod Waveguide Antenna as THz Emitter for Photomixing Devices Articles uri icon

authors

  • RIVERA LAVADO, ALEJANDRO
  • PREU, SASCHA
  • GARCIA MUÑOZ, LUIS ENRIQUE
  • GENERALOV, ANDREY
  • MONTERO DE PAZ, JAVIER
  • DOEHLER, GOTTFRIED
  • LIOUBTCHENKO, DIMITRI
  • MENDEZ ALLER, MARIO
  • SEDLMEIR, FLORIAN
  • SCHNEIDEREIT, MARTIN
  • SCHWEFEL, HARALD G. L.
  • MALZER, STEFAN
  • SEGOVIA VARGAS, DANIEL
  • RAEISAENEN, ANTTI V.

publication date

  • March 2015

start page

  • 882

end page

  • 890

issue

  • 3

volume

  • 63

International Standard Serial Number (ISSN)

  • 0018-926X

Electronic International Standard Serial Number (EISSN)

  • 1558-2221

abstract

  • We propose a dielectric rod waveguide antenna (DRW) integrated with a photomixer as a THz emitter. This represents a different approach as opposed to the classical solution of a substrate lens. Main goals are an inexpensive alternative to substrate lenses, reduction of both reflections on the semiconductor-air interface and scattering of terahertz-generated power into the substrate. A radiation pattern measured at 137 GHz is shown as a proof-of-concept. In order to increase radiated power, the improvement of the rod antenna is discussed. Finally, as an application example, evanescent coupling of the DRW into a high index whispering gallery mode resonator is shown.