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Wireless Charger on Coupled Radial Spirals
P. 473–474.
A portable wireless device for recharging batteries of vehicles, phones, and another apparatus is offered and described in this paper. Application of novel antennas, formed by sections of coupled radial spirals with dimensions significantly less than the operating wavelength in free space, makes it possible effective transmission RF energy from one object to another without radiation into surrounding medium.
In book
Monterey: Institute of Electrical and Electronics Engineers, 2014.
Khudchenko A., Turygin S., Golubev E. et al., Proceedings of SPIE 2025 Vol. 13102 P. 858–862
The Millimetron Space Observatory will be equipped with the cryogenically cooled instrument for a Space-Earth Very Large Baseline Interferometry (S-E VLBI). It will be a multi-channel heterodyne receiver with 7mm, 3mm, 1.3mm and 0.8mm channels. The VLBI instrument will have a multi-frequency capability, provided by signal splitting in the input optics and by back-end functionalities. ...
Added: December 23, 2025
S. A. Presnyakov, A. D. Kasatkin, N. P. Kravchenko, , in: 2024 Systems of signals generating and processing in the field of on board communications.: IEEE, 2024. P. 1–6.
In this paper, the slow-wave structures (SWSs) of the “chain of coupled cavities”-type (CCC) were investigated. This type of SWS is widely used for designing the microwave amplifying devices due to their excellent heat dissipation properties allowing for higher output power. The influence of the transit channel, where the electron beam propagates, on the electrodynamic ...
Added: September 14, 2024
S. A. Presnyakov, A. D. Kasatkin, N. P. Kravchenko, , in: 2023 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO).: IEEE, 2023. P. 1–4.
In this paper, the slow-wave structure (SWS) of the “folded waveguide” -type was considered. This SWS is widely used for designing the devices in higher frequencies like millimeter and sub millimeter ranges due to its compactness, increased interaction length, reduced transit time effects, lower voltage requirements, and wide bandwidth. The calculation of its electrodynamic characteristics, ...
Added: October 16, 2023
Mamontov A. V., Nefedov V. N., Khritkin S. A., Измерительная техника 2022 № 6 С. 46–51
The actual problem of accelerating and reducing the energy costs of the sheet polymer composite material heat treatment technological process is considered. It is shown that to solve this problem, it is advisable to use the microwave radiation energy as a heating source. The main advantages of the microwave method of the sheet polymer composite ...
Added: October 24, 2022
Rano D., Hashmi M., Andrey Yelizarov et al., , in: 16th European Conference on Antennas and Propagation (EuCAP).: IEEE, 2022. P. 1–5.
Added: April 12, 2022
IEEE, 2020.
On behalf of the Organizing Committee, we warmly welcome you to join the 2020 Asia-Pacific Microwave Conference (APMC 2020) virtually in Hong Kong from Tuesday, 8 December 2020 to Friday, 11 December 2020. The conference was launched in India in 1986, China in 1988 and Japan in 1990, and then becomes an annual conference since ...
Added: September 29, 2021
Kravchenko N., Kasatkin A., Presnyakov S. et al., , in: 2021 Systems of signals generating and processing in the field of on board communications.: IEEE, 2021. P. 1–4.
This paper discusses the modeling of the process of interaction in traveling-wave tubes (TWTs) based on 'coaxial-radial line'-type (CRL-type) slow-wave structures (SWSs). One of the most important tasks while designing TWTs is to achieve high output power over wide range of frequencies. The aim of this paper is to try to solve this problem by ...
Added: September 23, 2021
Sviatoslav Iakimenko, Ikonnikova D., , in: Internet of Things, Smart Spaces, and Next Generation Networks and Systems. 20th International Conference, NEW2AN 2020, and 13th Conference, ruSMART 2020, St. Petersburg, Russia, August 26–28, 2020, Proceedings, Part IIssue 12525.: Springer, 2020. P. 110–118.
The paper investigates the effectiveness of wireless power collection of electromagnetic energy emitted by LPD433 and Wi-Fi transmitters as well as by the base stations of the LTE and 5G mobile network. The legal regulations of the Russian Federation that affect wireless energy collection (sanitary zone range, maximum transmitter power and antenna gain, etc.) have ...
Added: January 3, 2021
Yelizarov (Elizarov) A. A., Nazarov I., Skuridin A. et al., , in: 2020 International Conference on Engineering Management of Communication and Technology (EMCTECH), 20-22 October 2020, Vienna, Austria.: IEEE, 2020. P. 1–4.
In this paper we report on results of research of wireless power transfer (WPT) for mobile and wearable devices that are part of the IoT and Cyber Physical Systems. The results of analytical and numerical modelsof antenna array are presented. The antenna array consists of nine planar half-wave vibrators arranged in a 3x3 square formation.The ...
Added: December 9, 2020
Loutridis A., Kazıcı S., Stukach O. et al., , in: Advanced Radio Frequency Antennas for Modern Communication and Medical Systems.: IntechOpen, 2020. Ch. 4 P. 1–16.
A novel class of complex-shaped antipodal Vivaldi antennas with enhanced impedance matching characteristics and an equivalent fractional bandwidth (FBW) of 166.8% is proposed. The reported antenna geometry is designed using the super-ellipse equation and implemented using an inexpensive FR4 laminate having a size of 170.7 mm × 134 mm × 0.2 mm. The presented low-cost, easy-to-fabricate radiating structure yields typical total efficiency, ...
Added: November 17, 2020
IntechOpen, 2020.
The main objective of this book is to present novel radio frequency (RF) antennas for 5G, IOT, and medical applications. The book is divided into four sections that present the main topics of radio frequency antennas. The rapid growth in development of cellular wireless communication systems over the last twenty years has resulted in most ...
Added: November 17, 2020
Presnyakov S., Kravchenko N., Kasatkin A. et al., , in: 2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE’ 2020). MATERIALS OF THE INTERNATIONAL SCIENTIFIC AND TECHNICAL CONFERENCE. Saratov. September 24-25, 2020.: IEEE, 2020. P. 210–213.
The subject of this work is the theoretical optimization of the design and dimensions of the coaxial-radial line (CRL) based on the program for calculating the dispersion characteristics of the CRL. The chosen CRL design allows optimizing the coupling resistance and dispersion of the slow-wave structure. ...
Added: November 13, 2020
Pchelnikov Y., Yelizarov (Elizarov) A. A., IEEE Transactions on Electron Devices 2020 Vol. 67 No. 3 P. 1165–1170
We present the sensor with a sensitive element (SE) based on coupled radial spirals, which can be used for monitoring technological processes in the Electronic Industry, as well as for detecting damages on the pipelines under protective coatings. The main properties and characteristics of such SE are analyzed and measured.
It is shown that the concentration ...
Added: March 4, 2020
Kravchenko N., Mukhin S., Kasatkin A. et al., Journal of Communications Technology and Electronics 2019 Vol. 64 No. 5 P. 517–523
The method of equivalent systems is used to simulate resonator slow-wave structures of beamplasma devices. A collisionless plasma is considered as a filler for the drift channel. The adequacy of the model is shown by comparing the calculation results with known experimental data. The dispersion characteristics of slow-wave systems are analyzed. The structure of the ...
Added: November 28, 2019
Yelizarov (Elizarov) A. A., Lavrukhin I., Bashkevich S. et al., , in: SYNCHROINFO 2019 Systems of Signal Synchronization, Generating and Processing in Telecommunications, IEEE Conference # 47541.: IEEE, 2019. P. 1–4.
This paper discusses an important component of the radio frequency identification (RFID) system, namely, the RFID-tag and the bending effect on its electrodynamic parameters. The RFID tag was modeled and the following parameters were calculated: Scattering Coefficients (parameter S11), Voltage Standing Wave Ratio (VSWR), vertical and horizontal radiation patterns and total. The results of the ...
Added: August 27, 2019
Slunyaev A., Ezersky A., Mouazé D. et al., , in: Nonlinear Waves and Pattern Dynamics.: Switzerland: Springer, 2018. P. 67–76.
Arisingmodulations of surface gravitywaves in a shallow-water resonator under harmonic forcing is discovered in laboratory experiments. Different types of modulations are found. When certain conditions are satisfied (appropriate frequency and sufficient force of excitation), the standing waves become modulated, and the envelopes of standing waves propagate in the channel. Strongly nonlinear numerical simulations of the Euler equations are performed reproducing ...
Added: March 1, 2019
Kravchenko N., Presnyakov S., Kasatkin A. et al., , in: Proceedings of 2018 Asia-Pacific Microwave Conference.: The Institute of Electronics, Information and Communication Engineers (IEICE), 2018.
This article considers the possibility of expanding the operating band of “chain of coupled resonators”-type slow-wave structure. A waveguide-resonator model which allowed to determine the conditions of the main passband expansion and the coupling impedance increase is utilized. ...
Added: November 30, 2018
Kravchenko N., Izvestiya Vysshikh uchebnykh zavedeniy. Prikladnaya nelineynaya dinamika 2018 Vol. 26 No. 2 P. 69–86
Aim. The main stages of scientific activity of V.A. Solntsev from the student's bench to the leader of the scientific school on radiophysics and microwave electronics are investigated. Method. Based on the primary publications, the main directions of the creative path of the scientist, whom determined the electronic age of the time, are analyzed. Results. ...
Added: November 26, 2018
Stukach O., Mescia L., Bia P. et al., Mathematical Problems in Engineering 2016 Vol. 2016 No. 8130160 P. 1–10
The electromagnetic analysis of a special class of 3D dielectric lens antennas is described in detail.This new class of lens antennas
has a geometrical shape defined by the three-dimensional extension of Gielis’ formula. The analytical description of the lens shape
allows the development of a dedicated semianalytical hybrid modeling approach based on geometrical tube tracing and physical
optic. ...
Added: November 3, 2018