The article deals with problems of receiving a terahertz signal and shows the possibilities for reducing the noise characteristics of the receiver. Development of a receiver with high sensitivity for the said range is an important scientific and technical objective. The most challenging issue is selection of a waveguide system to be based upon for construction of the input part of the receiver. As such a system, it is recommended to use metal-dielectric waveguides. To suppress the heterodyne noise, it is proposed to use the Mach – Zehnder interferometer in the input part of the receiver. It is demonstrated that, in contrast to conventional circuits, in this particular case a high degree of noise suppression of the heterodyne is achieved with the use of only one mixing diode, thereby the noise figure of the receiver assumes a relatively low value. The results obtained make it possible to develop highly sensitive receivers operating in terahertz range.
THE STUDY OF METHODS OF REDUCING NOISE FIGURE OF THE RECEIVER IN THE TERAHERTZ RANGE
2018
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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