Development of Wireless Communication Systems in the Subterahertz Frequency Range

Autor: A. N. Panin, V.V. Shcherbakov, K. I. Kisilenko, S. I. Pripolzin, Vladimir L. Vaks, Vladimir V. Biryukov, A. S. Raevsky
Rok vydání: 2019
Předmět:
Zdroj: Radiophysics and Quantum Electronics. 61:763-772
ISSN: 1573-9120
0033-8443
DOI: 10.1007/s11141-019-09934-5
Popis: The subterahertz and terahertz frequency ranges are promising for the creation of high-speed wireless communication systems because of the possibility to achieve a bandwidth of about several dozen gigahertz, which ensures a high channel capacity. However, rapid attenuation of a signal during its propagation in the atmosphere complicates the operation of communication systems in these ranges. The use of fixed narrow-beam antennas with a high power gain provides a direct surface communication distance of up to a few kilometers. The communication distance limitation can be partially removed by decreasing the frequency down to 200 GHz and narrowing the channel bandwidth down to a few gigahertz. In this paper, we present a radically new approach that was developed to create a wideband (up to one gigahertz) communication channel based on rapid modulation of a centimeter wavelength signal followed by the carrier-frequency multiplication up to 230 GHz without the modulating-signal distortion. This approach was not used in the previous communication systems. The model of a transmit–receive system (200–220 GHz) based on modern semiconductor devices is described in detail. The possibility of digital signal transmission at a speed of up to 1 Gbit/s is experimentally shown. According to calculations, an output power of the transmitter about several hundreds of microwatt is enough for data transmission to a distance of up to 1.5 km with an antenna gain of no less than 50 dB.
Databáze: OpenAIRE
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