%0 Patent
%T Method and system for three-dimensional detection of objects using Thz radiation
%+ Groupe d'étude des semiconducteurs (GES)
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Roskos, Hartmut
%A Lisauskas, Alvydas
%A Löffler, Torsten
%A Knap, Wojciech
%A Coquillat, Dominique
%A Teppe, Frédéric
%A Dyakonov, Michel
%N WO2010028972
%8 2010-03-18
%D 2010
%K Terahertz
%K detection
%K transistor
%K imaging
%Z Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]Patents
%X For optical frequencies, there are systems known from the prior art which not only make it possible to represent an object two-dimensionally, but also detect it three-dimensionally, in other words to determine the distance between the object and the detector for individual pixels. In contrast, the object of the present invention is to provide a system and a method for detecting an object three-dimensionally using high-frequency electromagnetic radiation at a frequency in a range of 100 GHz to 10 THz. According to the invention, this object is met by a system for detecting an object three-dimensionally using high-frequency electromagnetic radiation, the system comprising a radiation source for radiating high frequency radiation at a frequency in a range of 100 GHz to 10 THz, a receiver for detecting the high frequency radiation emitted from the radiation source, said receiver comprising an antenna element and a field effect transistor for mixing the high frequency radiation emitted by the radiation source with a local oscillator signal, wherein the field effect transistor comprises a source, a drain and a gate, and comprising a signal source for generating an electric modulation signal, wherein the signal source is connected to the radiation source in such a way that the high frequency radiation can be modulated by the modulation signal, and wherein the signal source is connected to the gate of the field effect transistor in such a way that the sensitivity of the field effect transistor can be modulated using a local oscillator signal coupled at a fixed phase to the modulation signal.
%G German
%L hal-00391711
%U https://hal.science/hal-00391711
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ GES
%~ UNIV-MONTPELLIER
%~ UM1-UM2