Physics of Wave Processes and Radio Systems最新文献_第7页

Description of digital systems by various construction schemes 数字系统的各种建设方案的描述

Physics of Wave Processes and Radio Systems Pub Date : 2022-06-30 DOI: 10.18469/1810-3189.2022.25.2.60-66

引用次数: 0

The calculation of reflections of linear polarization plane electromagnetic wave from the boundary of the «air – wet soil» based on heterogeneous Maxwell Garnett and Brughehman models 基于非均质Maxwell Garnett和bruughehman模型的“空气湿土”边界线偏振平面电磁波反射计算

Physics of Wave Processes and Radio Systems Pub Date : 2022-06-30 DOI: 10.18469/1810-3189.2022.25.2.22-27

引用次数: 1

Study of digital diagram formation for optimum interference and noise reduction in antenna arrays of different shapes with directional radiators 不同形状定向辐射天线阵列中最佳降噪干扰的数字图生成研究

Physics of Wave Processes and Radio Systems Pub Date : 2022-06-30 DOI: 10.18469/1810-3189.2022.25.2.73-82

引用次数: 1

Algorithm for parametric synthesis of cascade-connected matching mixed quadripoles according to the criterion of ensuring stationary generation mode 基于稳定生成模式的级联匹配混合四极参数综合算法

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.45-54

A. Golovkov, V. Golovkov

{"title":"Algorithm for parametric synthesis of cascade-connected matching mixed quadripoles according to the criterion of ensuring stationary generation mode","authors":"A. Golovkov, V. Golovkov","doi":"10.18469/1810-3189.2022.25.1.45-54","DOIUrl":"https://doi.org/10.18469/1810-3189.2022.25.1.45-54","url":null,"abstract":"Introduction: the analysis of the well-known literature shows that the use of various types of four-pole devices (reactive, resistive, complex) allows to increase the area of physical feasibility of the stationary generation mode. The purpose of the work: increasing the area of physical feasibility of the stationary mode of generation by optimizing the parameters of the matching mixed four-poles. One part of such four-pole devices consists only of resistive elements, and the second part consists only of reactive elements. Materials and methods: four-pole theory, matrix algebra, decomposition method, method of synthesis of microwave control devices, immitance stability criterion. Results: mathematical models of matching mixed four-pole devices are obtained in the form of relationships between the elements of their transmission matrix and the dependencies of the resistances of their two-pole devices on the frequency, optimal according to the criterion of ensuring a stationary generation mode. Conclusion: a comparative analysis of the theoretical results (frequency response and frequency response of the autogenerator in the amplification mode) obtained by mathematical modeling in the MathCad system, and the experimental results obtained by circuit modeling in the OrCad (in the amplification mode) and MicroCap (in the generation mode) systems shows their satisfactory coincidence. The frequency response and frequency response in the amplification mode are similar to the amplitude and phase spectra of the generated oscillations in the generation mode.","PeriodicalId":129469,"journal":{"name":"Physics of Wave Processes and Radio Systems","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126607288","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: 2

Delay model based on shifted hyperexponential and Erlang distributions 基于移位超指数和Erlang分布的延迟模型

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.21-26

V. Tarasov, N. Bakhareva

{"title":"Delay model based on shifted hyperexponential and Erlang distributions","authors":"V. Tarasov, N. Bakhareva","doi":"10.18469/1810-3189.2022.25.1.21-26","DOIUrl":"https://doi.org/10.18469/1810-3189.2022.25.1.21-26","url":null,"abstract":"This article is devoted to the derivation of results for the average delay of requests in the queue for a queuing system formed by two flows with the laws of interval distributions in the form of second-order hyperexponential and Erlang distributions shifted to the right. In queuing theory, studies of G/G/1 systems are relevant due to the fact that there is no solution in the final form for the general case. Therefore, in the study of such systems, various particular distribution laws are used as an arbitrary distribution law for G. In this case, the use of the hyperexponential distribution law ensures the coefficient of variation of the input flow intervals is large units, and the Erlang distribution is less than one. To solve the problem posed, the method of spectral decomposition of the solution of the integral Lindley equation was used, which plays an important role in the queueing theory. This method made it possible to obtain a solution for the average delay of requests in the queue for the system under consideration in a closed form. As is known, the remaining characteristics of the queuing system are derived from the average delay of requests.","PeriodicalId":129469,"journal":{"name":"Physics of Wave Processes and Radio Systems","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122479060","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

Change of the form of the vertical elastic tank with a liquid 改变了垂直弹性罐的形式，有了液体

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.80-86

A. Volobuev, S. V. Krasnov, K. A. Adyshirin-zade, T. Antipova, Natalia N. Aleksandrova

引用次数: 0

Principles of construction and basic characteristics of perspective noiseproof course-glide system 透视式防噪声航向-滑行系统的结构原理及基本特点

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.27-35

A. Golovkov, V. Golovkov

{"title":"Principles of construction and basic characteristics of perspective noiseproof course-glide system","authors":"A. Golovkov, V. Golovkov","doi":"10.18469/1810-3189.2022.25.1.27-35","DOIUrl":"https://doi.org/10.18469/1810-3189.2022.25.1.27-35","url":null,"abstract":"Introduction: based on the analysis of the known literature, it is shown that modern course-glide systems have disadvantages associated with the presence of carrier signal generators in them, the lack of frequency and spatial selection of the signal and interference. The purpose of the work: to develop the principles of constructing a promising noise-resistant course-glide system based on the joint use of inversely directed reflectors, aperture antennas and electrodynamic controlled layered inhomogeneous structures. The controlled layers are periodic lattices of conducting elements with nonlinear elements included in their discontinuities. Uncontrolled layers are lossless dielectric layers and periodic lattices of conducting elements. Materials and methods: algorithms for parametric synthesis of controlled and uncontrolled layers of electrodynamic inhomogeneous structures, experimental methods for analyzing monostatic and bistatic backscattering diagrams, experimental methods for determining the frequency characteristics of electrodynamic inhomogeneous structures in various states of controlled layers. Results: the possibility of designing a promising course-glide system with specified characteristics that provide a new method of radio communication without using its own carrier signal generator is shown. Conclusion: the proposed course-glide system can be used to solve many problems that cannot be solved with the help of a known course-glide system. Such tasks include imitation of moving and stationary objects of weapons and military equipment; covert transmission of information in the absence of its own carrier signal source; radio-electronic suppression of radio communication and control systems, radar control systems for weapons of a likely enemy.","PeriodicalId":129469,"journal":{"name":"Physics of Wave Processes and Radio Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133503920","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: 2

Mathematical delay model based on QS with hyperexponential and Erlang distributions 基于超指数分布和Erlang分布的QS数学延迟模型

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.16-20

V. Tarasov

{"title":"Mathematical delay model based on QS with hyperexponential and Erlang distributions","authors":"V. Tarasov","doi":"10.18469/1810-3189.2022.25.1.16-20","DOIUrl":"https://doi.org/10.18469/1810-3189.2022.25.1.16-20","url":null,"abstract":"This article is devoted to the study and obtaining a closed-form solution for the average delay of claims in the queue for a queuing system formed by two flows with hyperexponential and Erlang distributions of intervals. The combination of these distribution laws provides the coefficient of variation of the input flow intervals large units, and for the service time - less than unity. Considering the coefficients of variation as numerical characteristics in the queuing theory is important, because the main characteristic of the queuing system is that the average delay is related to these coefficients of variation by a quadratic dependence. In queuing theory, studies of G/G/1 systems are relevant due to the fact that they can be used in modeling data transmission systems for various purposes. To solve the problem posed, the method of spectral decomposition of the solution of the integral Lindley equation was used. This method made it possible to obtain a spectral decomposition, and through it a solution for the average delay of requests in the queue for the system under consideration in a closed form. For the practical application of the results obtained, the method of moments of the theory of probability was used.","PeriodicalId":129469,"journal":{"name":"Physics of Wave Processes and Radio Systems","volume":"399 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124630545","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

Entanglement of two superconducting qubits induced by a thermal noise of a cavity with Kerr medium taking into account the atomic coherence 考虑原子相干性的克尔介质腔热噪声诱导的两个超导量子比特纠缠

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.7-15

E. K. Bashkirov

{"title":"Entanglement of two superconducting qubits induced by a thermal noise of a cavity with Kerr medium taking into account the atomic coherence","authors":"E. K. Bashkirov","doi":"10.18469/1810-3189.2022.25.1.7-15","DOIUrl":"https://doi.org/10.18469/1810-3189.2022.25.1.7-15","url":null,"abstract":"The system consisting of two identical artificial atoms (qubits), resonantly interacting with the mode of quantum field of an ideal microwave cavity in the presence of Kerr nonlinearity, is considered. For the considered model, an exact solution of the quantum Liouville equation for the full density matrix of the system two qubits + resonator field mode is obtained. To solve the quantum equation of evolution, the representation of dressed states, that is, the eigenfunctions of the Hamiltonian, was used. A complete set of dressed states of the considered model is found. With its help, the solution of the evolution equation was initially found for coherent initial states of qubits and Fock states of the field, that is, states with a certain number of photons in the resonator mode. Then, the above solution was generalized to the case of the thermal state of the resonator field. A reduced density matrix of two qubits is found by averaging over the field variables. The two-qubit density matrix is used to calculate the parameter of qubit entanglement in the analytical form. Concurrence was chosen as a quantitative criterion for qubit entanglement. A numerical simulation of the time dependence of the consistency of qubits for various parameters of the model and the initial states of qubits was carried out. The most interesting result seems to be that taking into account the initial coherence of qubits in the model with Kerr nonlinearity leads to a significant increase in the maximum degree of entanglement of qubits induced by the thermal field, even in the case of high intensities of the resonator field.","PeriodicalId":129469,"journal":{"name":"Physics of Wave Processes and Radio Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127199824","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: 1

Complex improvement of the efficiency of radio electronic devices and information transmission systems with OFDM based on nonlinear systems with dynamic chaos 基于非线性动态混沌系统的OFDM对无线电电子设备和信息传输系统效率的复杂改进

Physics of Wave Processes and Radio Systems Pub Date : 2022-03-29 DOI: 10.18469/1810-3189.2022.25.1.55-64

M. Zuev

引用次数: 0