Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki最新文献_第5页

Estimation of S-Parameters and Dielectric Permittivity of Polycor and GaAs Samples Using a Vector Network Analyzer 用矢量网络分析仪估计Polycor和GaAs样品的s参数和介电常数

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-06-21 DOI: 10.35596/1729-7648-2023-21-3-26-33

Д. А. Кондрашов, Н. А. Певнева, А. В. Гусинский, А. А. Павлючик, М. А. Гончарик, Denis A. Kondrashov, N. Pevneva, Alexander V. Gusinsky, Alexei A. Pavlyuchik, Maya A. Goncharik

{"title":"Estimation of S-Parameters and Dielectric Permittivity of Polycor and GaAs Samples Using a Vector Network Analyzer","authors":"Д. А. Кондрашов, Н. А. Певнева, А. В. Гусинский, А. А. Павлючик, М. А. Гончарик, Denis A. Kondrashov, N. Pevneva, Alexander V. Gusinsky, Alexei A. Pavlyuchik, Maya A. Goncharik","doi":"10.35596/1729-7648-2023-21-3-26-33","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-3-26-33","url":null,"abstract":"To study the S-parameters and dielectric permittivity of polycor and GaAs samples, a vector network analyzer R4-MWM-118 with a special measuring cell and a modified Nicholson–Ross–Weir method were used. The use of polynomial Chebyshev criteria in R4-MWM-118 for approximation in digital filtering made it possible to reduce the distortion of the achieved approximations of S-parameters. The use of digital filtering made it possible to eliminate the subjective error of the operator in the analysis and measurements with the presence of a “noise” component, to improve qualitatively the perception of the amplitude-frequency characteristic and to exclude uninformative changes in the instrument readings at any point in the frequency range. The dependences of the amplitudes and phases of the transmission and reflection coefficients, as well as the dielectric permittivity of the samples under study on the frequency in the range 78.33–118.10 GHz are obtained.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45499433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability of Characteristics of Physical Random Number Generators 物理随机数发生器特性的稳定性

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-06-21 DOI: 10.35596/1729-7648-2023-21-3-34-40

М. О. Пикуза, С. Ю. Михневич, А. Ю. Сенкевич, M. O. Pikuza, S. Mikhnevich, Aliona YU. Siankevich

{"title":"Stability of Characteristics of Physical Random Number Generators","authors":"М. О. Пикуза, С. Ю. Михневич, А. Ю. Сенкевич, M. O. Pikuza, S. Mikhnevich, Aliona YU. Siankevich","doi":"10.35596/1729-7648-2023-21-3-34-40","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-3-34-40","url":null,"abstract":"The development of technologies leads to the need of revising the methods used to obtain cryptographic keys. The randomness parameters of sequences generated by physical random sequence generators are affected by the physical parameters of the recording equipment and the environment. The requirements for the randomness of the sequence, when passing the binary test, are obtained. It is shown that as the sequence length increases, the requirements for possible deviations from the equiprobable distribution of 0 and 1 increase. The randomness stability of the sequences generated by the generator based on the study of photons is estimated. The oscillator under study consists of an LED and a compact silicon photomultiplier designed to detect low-power light radiation. Possible physical processes leading to the deterioration of the randomness of sequences are shown. The possibility of using a generator of random numerical sequences based on a small-sized silicon photomultiplier for cryptographic purposes is estimated.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43102948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Optimization of the Energy Characteristics of a Ground Penetrating Radar with Continuous Linear-Frequency-Modulated Radiation 连续线调频辐射探地雷达能量特性的实验优化

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-06-21 DOI: 10.35596/1729-7648-2023-21-3-48-55

I. Malevich, A. S. Lopatchenko

{"title":"Experimental Optimization of the Energy Characteristics of a Ground Penetrating Radar with Continuous Linear-Frequency-Modulated Radiation","authors":"I. Malevich, A. S. Lopatchenko","doi":"10.35596/1729-7648-2023-21-3-48-55","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-3-48-55","url":null,"abstract":"In recent years, research has been actively carried out aimed at developing the concept of construction and ways of technical implementation of ground penetrating radars with continuous wave linear-frequency-modulated (LFM) radiation. The key prerequisites for the creation of such systems are the complex consideration of the operating conditions of the radio channel in the near field, including the features associated with multichannel leakage of the probing signal components into the reception path, the presence of multipath reflections from the covering surface, the variable speed of the electromagnetic wave, and the provision of linear processing of a continuous group broadband radio signal with large dynamic range. The paper proposes and describes a scheme of a laboratory stand for LFM GPR research and optimization of the energy characteristics in modes with critical levels of reflections. The results of experiments on the analysis and optimization of the parameters of the end-to-end transfer characteristic of the radio channel are presented. Response studies were performed for two types of antennas at different suspension heights. The responses of the system to an increase in the durtion of the probing pulse and a change in the type of window function were evaluated. An empirical dependence of signal losses during propagation in radio channels of LFM GPR has been established. The conducted studies will improve the energy characteristics of ground penetrating radars with continuous LFM radiation by increasing the detection efficiency of shallow and near-surface objects.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41430674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Passivation of a Conductive System of Integrated Circuits with a Layer of Aluminum Nitride 具有氮化铝层的集成电路导电系统的钝化

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-06-20 DOI: 10.35596/1729-7648-2023-21-3-12-16

В. В. Емельянов, Victor V. Emelyanov

引用次数: 0

The Role of Aluminum in Graphitic Carbon Nitride Synthesis from Tiourea 铝在钛脲合成石墨氮化碳中的作用

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-06-20 DOI: 10.35596/1729-7648-2023-21-3-5-11

С. Е. Максимов, Е. Б. Чубенко, В. Е. Борисенко, А. И. Кулак, Sergey E. Maksimov, Eugeny B. Chubenko, Victor E. Borisenko, Anatoly I. Kulak

{"title":"The Role of Aluminum in Graphitic Carbon Nitride Synthesis from Tiourea","authors":"С. Е. Максимов, Е. Б. Чубенко, В. Е. Борисенко, А. И. Кулак, Sergey E. Maksimov, Eugeny B. Chubenko, Victor E. Borisenko, Anatoly I. Kulak","doi":"10.35596/1729-7648-2023-21-3-5-11","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-3-5-11","url":null,"abstract":"The synthesis of a composite material based on graphitic carbon nitride by pyrolytic decomposition at 550 °C of a mechanical mixture of thiourea with the addition of aluminum powder in the amount of 5–30 wt.% has been studied. According to the scanning results by means of electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffractometry the synthesized material consists of carbon nitride, aluminum sulfide, residual metallic aluminum and aluminum hydroxide. The excess of metallic aluminum is due to the partial interaction with sulfur-containing volatile substances formed during the thermal decomposition of thiourea. It is shown that the intensity and width of the photoluminescence spectra of the synthesized composites are determined by the aluminum concentration in the initial mixture. As the aluminum concentration increases from 5 to 30 wt.%, the photoluminescence intensity maximum shifts to the long wavelength region from 534 to 560 nm. This can be used to create optoelectronic devices based on the graphitic carbon nitride.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47554419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Model and Method for Determining the Optimal Structure of the Security System for Critical Information Infrastructure 确定关键信息基础设施安全系统最优结构的模型和方法

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-04-24 DOI: 10.35596/1729-7648-2023-21-2-95-103

V. Gasimov, J. I. Mammadov

引用次数: 0

Influence of the Heterogeneity of Spatial Distribution of Peripheral Radio Equipment of 4G/5G Networks on the Level of Electromagnetic Background Created in Buildings 4G/5G网络外围无线电设备空间分布的不均匀性对建筑物电磁背景水平的影响

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-04-24 DOI: 10.35596/1729-7648-2023-21-2-49-57

V. Mordachev

引用次数: 0

Computational Analysis of the Structural Composition of Coronavirus Genomes 冠状病毒基因组结构组成的计算分析

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-04-24 DOI: 10.35596/1729-7648-2023-21-2-104-113

M. Sprindzuk, V. Bernik, A. S. Vladyko, L. Zhuozhuang, L. Titov

引用次数: 0

Design and Performance of Amorphous Silicon Based on Uncooled Bolometer-Type Infrared Focal Plane Arrays 基于非制冷Bolometer型红外焦平面阵列的非晶硅的设计与性能

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-04-24 DOI: 10.35596/1729-7648-2023-21-2-77-85

Van Trieu Tran, V. Stempitsky, I. Lovshenko, K. Korsak, Dinh‐Ha Dao

引用次数: 0

Evaluation of Information Indicators of Quantization Noise Generated by Speech Signal Analogue-Digital Conversion 语音信号模数转换产生的量化噪声的信息指标评估

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-04-24 DOI: 10.35596/1729-7648-2023-21-2-32-40

V. K. Zheleznyak, K. J. Rahanov, Y. Adamovskiy

引用次数: 0