MODELLING OF THE FUNCTIONAL UNITS OF THE TRANSMITTING AND RECEIVING RADIO PATHS OF TERAHERTZ
Keywords:computer modeling terahertz range of the radio transmitter and receiver, frequency converters, quasi-optical local oscillator, septum-filter telecommunication system
Background. One of the promising applications of terahertz technology are communication systems and telecommunications. In particular, it provides for the creation of fundamentally new in size, noise immunity and energy efficiency devices and subterahertz (TGD) for high-speed transmission of video signals, microwave radio systems, line of sight, the fifth generation of transport of distribution of mobile networks (5G) and radar for the purpose of high-precision detection and recognition of small high-speed targets. The development of the element base of electronic devices, the widespread introduction of digital technology formation and signal processing allow a new approach to the solution of many problems of telecommunication systems and sub- TGD. These circumstances make this range unique to the construction of telecommunication systems and networks, including the PPC line of sight for the transport of the fifth generation of mobile networks (5G). Today there is a great need in the organization of high-reliability single-span lines designed for ultra-fast data transmission and exchange of data between computers and peripheral devices. For these purposes, the most suitable for microwave links TGD, the advantages of which are high noise immunity and bandwidth, low energy consumption. The task of developing the transmitting and receiving paths PPC becomes extremely important.
Objective. The aim of the paper is the development of new circuit technological solutions for creating transmission with high (up to 5 mW) output power and receiver (with high sensitivity - noise ratio of 10 dB) radiopathes terahertz wavelengths.
Methods. Analysis of all known publications devoted to the design of telecommunication devices and systems and subterahertz range using microwave photonics technology and electronics, made it possible to offer new scheme-technological solutions create a local oscillator on the basis of quasi-optical power and spatial summation methods and a highly sensitive
frequency converters pumped the fundamental harmonic
Results. The modeling and experimental studies of functional units receive and transmit paths of the telecommunications system in the terahertz frequency range 130-134 GHz, consisting of: frequency converters pumped to the primary harmonic oscillator using the quasi-optical power and spatial summation methods, band-pass-filter septum waveguide channel 1,6'0,8 mm. For the first time using the proposed scheme and the authors of the new technological solutions developed transmission (with an output power up to 5 mW) and the receiver (with a noise figure of 10 dB) of the radio terahertz wavelengths.
Conclusions. The created transmission (with an output power up to 5 mW) and the receiver (with noise coefficient at 10 dB) of the radio terahertz wavelength range can be used in the construction of telecommunication systems and networks, including radio-relay systems, line of sight for the transport of mobile next generation networks . Providing bandwidth radio link in the tens of Gb / s or more (required in the future) is possible through the use of terahertz wavelengths, which allows you to not only greater speed of information transmission, but also highly reliable radio communication at a very low weight and envelope transceiver transmitting channel and antenna system.
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