Tahcrtz imaging finds more and more applications in L jancj security, medical, and life sciences applications. u'liile THz sources and detection systems are gaining n -lund, the ability of electronics conversion systems to keep ~T with the development of these systems seems to be l-i"iiing behind The THz domain is largely dominated by tlvrmal noise and material characteristics altered by ndividual and collective modes of molecular vibrations and icnations. Currently, analog-to-digital (ADC) conversion vs stems are seen as the bottleneck for THz applications. DC systems available to date have to down-convert the Tllz frequency into GHz domain and then digitize the signal, adding to the complexity, weight, size, and power requirements of any such system.. Using a series of electromagnetic input resonator that selects the band and polarization in series with a plasmon resonator-amplifier the detected electromagnetic signal is applied to a very low current FET, The detection is based on the nonlinear carrier rvrturbation process that makes the function of a down-converter, A fast ADC is digitizing the detected signal applving it to a set of fast memories. The detection chain repeated for various frequencies and grouped in a single multiband module - eye unit, is further integrated into the iiragci.
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