Impulse ultrawideband wireless communication system of the terahertz frequency band

Abstract

The article considers the possibility of developing a wireless telecommunication system of the terahertz band (THz), in which an impulse radio ultrawideband signal (IR-UWB) is used as an information carrier. Variants of the transmission and reception path constructions of the THz IR-UWB wireless communication system (WCS) are considered, taking into account the technical characteristics of the THz devices available on the telecommunication market. One of the main results is the block diagram of the IR-UWB WCS of the terahertz range development of the point–to–point type based on the heterodyning method. It is also important that already existing technical implementations of some THz blocks (subharmonic mixer, waveguides, antennas, etc.) of the transmitter and receiver devices allow us to determine which devices of the WCS require designing. The calculation of the energy budget of the THz IR-UWB WCS line for various types of IR-UWB signal modulation was also carried out, which made it possible to estimate the distance between corresponding stations under different conditions of the electromagnetic wave propagation environment. The proposed version of the radio communication system is of the point-to-point type using IR-UWB signal in the terahertz range. An assessment of the potential distance between the corresponding line-of-sight stations for different conditions of EMF propagation and types of performed IR-UWB modulation was carried out, which shows that for the ideal case of EMF propagation with an increase in the operating frequency, an increase in distance is observed, which is obviously because energy losses EMF in free space with increasing frequency is compensated by increasing the directivity of the transmitting and receiving antennas.