Physics of Wave Processes and Radio Systems
Peer-review quarterly journal.
Editor-in-chief
- Prof. Dmitry S. Klyuev, Dr. Sci. (physics)
ORCID iD: 0000-0002-9125-7076
Publisher
- Povolzhskiy State University of Telecommunications & Informatics (Samara, Russia)
Journal founders
- Samara National Research University
https://ssau.ru/ - Povolzhskiy State University of Telecommunications & Informatics
https://www.psuti.ru/
About
“Physics of Wave Processes and Radio Systems” is theoretical and scientific peer-reviewed academic journal published quarterly since 1998. The journal considers for publication original papers including but not limited to next disciplines:
- radio physics;
- optics;
- radio engineering including TV systems;
- antennas, high frequency devices and its technologies;
- solid-state electronics, radio electronics components, micro- and nanoelectronics, quantum effect devices.
Types of manuscripts to be accepted for publication
- results of original research
- reviews
- letters to the editor
Publications
- quarterly, 4 issues per year
- free of charge for authors (no APC)
- in English and Russian
- Open Access, under the Creative Commons Attribution 4.0 International License (CC BY 4.0)
Announcements More Announcements...
Physics of Wave Processes and Radio Systems journal has been added to DOAJPosted: 26.12.2023
The Physics of Wave Processes and Radio Systems journal has been accepted to indexing in Directory of Open Access Journals (DOAJ). All published articles and issues of the journal are indexed and available for searching into DOAJ. Journal webpage on DOAJ: https://doaj.org/toc/2782-294X |
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Current Issue
Vol 27, No 1 (2024)
- Year: 2024
- Articles: 9
- URL: https://journals.ssau.ru/pwp/issue/view/642
Articles
Reciprocal action of natural bianisotropy and artificial chirality on electromagnetic propagation in medium
Abstract
Frequency dependence of the group velocity of surface polaritons in a single-axle crystal of the Würcite type
Abstract
Background. Surface polaritons attract the attention of researchers and engineers for their unique properties and promising applications in the field of micro- and nanoelectronics. Such applications may include devices such as the transistor or even the polariton laser, as reported in the scientific literature. Aim. The paper analyzes the conditions for excitation of surface polaritons in a uniaxial crystal of the wurtzite type. The frequency dependence of the group velocity of surface polaritons is analyzed. Methods. The dispersion equation for surface polaritons in an anisotropic wurtzite-type crystal is found analytically by solving Maxwell’s equations and requiring that the boundary conditions for electromagnetic waves decreasing exponentially from the boundary be satisfied. Results. Aluminum nitride crystal AlN was chosen as the object of analysis. Possible frequencies of surface polaritons are found and it is shown that only the frequency Ω_1 = 844,84 cm^−1 satisfies all the conditions for the existence of surface polaritons. It is shown that in the region where a surface polariton exists, both the damping constants and the propagation parameters of surface polaritons increase. It is shown that the group velocity of a surface polariton decreases with increasing frequency. When the frequency reaches the value of the surface polariton frequency of the value Ω_1, the group velocity vanishes. Conclusion. The found decreasing frequency dependence of the surface polariton group velocity can be used in moderating devices based on polaritons.
Entanglement between two charge qubits taking account the Kerr media
Abstract
Parametrical synthesis of various radio devices with the set quantity of cascades of type «the resistive two-port network – the nonlinear part»
Abstract
Parametrical synthesis of various radio devices with the set quantity of cascades of type «the mixed two-port network – nonlinear part»
Abstract
Mathematical model of an antenna-waveguide path with signal separation by polarization – frequency
Abstract
Passive bandpass filters for modern microwave communication systems
Abstract
Background. Bandpass filters are an integral part of any radio engineering systems and modern communication systems. Research and development of new passive components is due to growing need for such elements for modernization and creation of new modern communication systems. Aim. A brief overview of passive bandpass filters. Their classification according to the type of implementation is given. Methods. Results of experimental research and design of different passive bandpass filters are considered. Results. Lumped elements filters, microstrip filters, filters on high-temperature superconductor films, filter on dielectric resonators, surface acoustic wave filters, bulk acoustic wave filters are considered. At a qualitative level, the main advantages and disadvantages are considered from point of view of electrical parameters and size indicators. Examples of topological and constructive implementation are given. Conclusion. The passive bandpass filters considered in the paper make it possible to implement frequency selection devices at operating frequencies up to 6 GHz and higher, taking into account modern system trends and requirements for devices of this type.
Antenna array of waveguide elements with dielectric phasing sections
Abstract
Background. The need to develop and continuously improve mobile and on–board high-speed satellite communication terminals, as well as satellite communication equipment with high secrecy of operation, emitting ultra-wideband signals, the spectral power density of which, measured at the input of receiving devices of radio monitoring complexes, should be significantly lower than the spectral power density of noise, is due to the following circumstances: ensuring reliable and high-quality communication military and civilian users; the development of the domestic element and technological base, import substitution; the need for rescue services in small-sized information transmission and reception systems; the need to develop satellite control systems for military and civilian equipment; the development of precision agriculture programs. An antenna array made of waveguide elements with dielectric phasing sections can serve as one such example. Aim. The model of the antenna element is considered, and its main characteristics are also given. A model of a linear antenna array consisting of 32 waveguide elements with phasing sections has been developed. Linear and flat antenna arrays based on a common-mode and equal-amplitude 1:32 power divider and antenna elements are considered. A model of a flat antenna array composed of 16 linear antenna arrays is also constructed and its main characteristics are given. Methods. The antenna element model is based on a circular waveguide with an internal diameter of 18 mm and a dielectric plate, the plane of which is oriented at an angle of 45° to the lines of force of the electric field intensity vector. The linear antenna array is powered by an equal amplitude and common-mode power divider, and the linear and flat antenna arrays are based on square waveguides with internal dimensions of 14×14 mm2 with beveled internal corners. Results. It is shown that the gain at a frequency of 10,95 GHz is 32,5 dB (normal) and 31,2 dB when the beam is deflected by ±37,5° in the angular plane. The gain at a frequency of 11,7 GHz is 33,8 dB (normal) and 32,5 dB when the beam is deflected by ±37,5° in the angular plane. With the maximum deviation of the main lobe from the normal, the level of the side lobes in the vertical increases to the level of -11,4 dB, which slightly exceeds the UBL with in-phase and equal amplitude field distribution in the headlight aperture (-13,2 dB). Conclusion. In the considered headlight design, the positioning of the main lobe of the radiation pattern in the azimuthal plane is carried out by mechanical rotation of the antenna system. The rejection of two–coordinate electronic scanning was chosen based on considerations of reducing phase shifters (or high-frequency switches) and reducing the cost of headlights.
Research of cognitive data processing in radio communication systems with permutation decoding
Abstract
Background. The need to use permutation decoding tools in radio communication systems is explained by the increased error correction capabilities of this method. In this case, complex matrix calculations during the search for equivalent codes according to the classical scheme of permutation decoding are replaced by a list of ready-made solutions. These solutions are calculated a priori and entered into the cognitive cards of the decoder processor, which makes the method a convenient tool in the procedure for ensuring information reliability when controlling, for example, unmanned vehicles via radio channels. In fact, matrix calculations on board are replaced by searching the list of cognitive maps for the right solution corresponding in real time to the current permutation of reliable character numerators. However, data processing in the decoder’s cognitive map requires a special description. Aim. The study of methods for identifying permutations of character numerators of code vectors in order to effectively transform them in a system of cognitive maps of a permutation decoder. Methods. The paper reveals the subtle structure of cognitive maps of productive and unproductive permutations of numerators, which allows on a regular basis to obtain an alternative solution for switching to a set of productive permutations when the receiver receives an unproductive permutation, thereby excluding the use of trial and error. Results. The efficiency of the permutation decoder increases due to the implementation of permutations that were originally included in a set of solutions introduced into the cognitive map of unproductive permutations. Conclusion. A family of microcontrollers is proposed to implement the principle of interaction of cognitive maps with a system of alternative solutions.