BROADBAND COMMUNICATION SYSTEM FOR COVERT TRANSMISSION OF INFORMATION
https://doi.org/10.26583/vestnik.2024.322
EDN: QUYRJS
Abstract
This paper describes a covert broadband communication system using surface acoustic wave delay lines (SAW delay lines). A matched filter consisting of ten SAW delay lines is designed. The delay lines consist of unidirectional transmit-receive and reflective interdigital converters (IDCs), having an operating frequency band of 2 MHz, a distance between central frequencies of 4 MHz, and operating in the frequency range 905 – 941 MHz. Based on these filters, a covert broadband communication system has been developed, which makes it possible to obtain an output signal 5 times higher than the noise level. The maximum signal delay is 13 µs, which is twice the delay between IDTs. The distance between the IDTs can be varied depending on the LS frequency. By setting delays in the LP in such a way that the total delay in the LP with the same frequencies is always the same, it is possible to create different matched filters in the same frequency range.
About the Authors
G. Ya. Karapetyan
Southern Federal University;
LLC «SAIGIVAT»
Russian Federation
Russian Federation
V. F. Kataev
Volgodonsk Engineering Technical Institute the branch of National Research Nuclear University «MEPhI»
Russian Federation
Russian Federation
N. V. Ermolaeva
Volgodonsk Engineering Technical Institute the branch of National Research Nuclear University «MEPhI»
Russian Federation
Russian Federation
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Review
For citations:
Karapetyan G.Ya., Kataev V.F., Ermolaeva N.V. BROADBAND COMMUNICATION SYSTEM FOR COVERT TRANSMISSION OF INFORMATION. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2024;13(2):115-120. (In Russ.) https://doi.org/10.26583/vestnik.2024.322. EDN: QUYRJS
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