Katalog Czasopism

• Practical Trial for Low-Energy Effective Jamming on Private Networks With 5G-NR and NB-IoT Radio Interfaces

  Publikacja

  • P. Skokowski
  • K. Malon
  • M. Kryk
  • K. Maślanka
  • J. M. Kelner
  • P. Rajchowski
  • J. Magiera

  - IEEE Access - Rok 2024

  Fourth-generation (4G) mobile networks are successively replaced by fifth-generation (5G) ones, based on the new releases of the 3rd Generation Partnership Project (3GPP) standard. 5G generation is dedicated to civilian users and the conducted analytical work shows that it has numerous technological gaps that prevent its direct implementation in military communications systems. However, the recent armed world conflicts showed that...

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• Compact Substrate-Integrated Hexagonal Cavity-Backed Self-Hexaplexing Antenna for Sub-6 GHz Applications

  Publikacja

  • V. Jayaprakash
  • C. Ds
  • R. K. Barik
  • S. Kozieł

  - IEEE Access - Rok 2024

  A self-multiplexing SIW antenna based on hexagonal SIW cavity is proposed. The self-hexaplexing antenna consists of different sizes of resonating elements, which provide the hexaband operations. The antenna resonates at 5 GHz, 5.17 GHz, 5.32 GHz, 5.53 GHz, 5.62 GHz, and 5.72 GHz by employing different slot lengths between the resonating elements. The proposed antenna provides the individual tunable characteristics of the operating...

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• Multiscalar Control Based Airgap Flux Optimization of Induction Motor for Loss Minimization

  Publikacja

  • T. Ayana
  • M. Morawiec
  • L. Wogi

  - IEEE Access - Rok 2024

  Based on the induction motor model, considering the core loss resistance that accounts for magnetic characteristic saturation, a speed control approach is devised with an adaptive full-order (AFO) speed observer. The induction motor model analysis is done sincerely in a stationary reference frame. The control approach incorporates a flux reference generator designed to meet optimal operational circumstances and a nonlinear speed...

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• An Optimized Ka-Band Low Profile Dual-Polarized Transmitarray Antenna With 2D Beam Switching

  Publikacja

  • S. H. Ramazannia Tuloti
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This article presents an optimized dual-polarized transmitarray antenna (TA) designed for MIMO applications at the Ka-band, capable of switching beams in two directions. The antenna aperture uses a small unit cell with three layers of Taconic RF-35 dielectric substrates, which can be easily fabricated using PCB technology. The unit cell achieved a 360-degree phase shift and a transmission magnitude exceeding –0.4 dB at 28 GHz....

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• Looking through the past: better knowledge retention for generative replay in continual learning

  Publikacja

  • V. Khan
  • S. Cygert
  • K. Deja
  • T. Trzciński
  • B. Twardowski

  - IEEE Access - Rok 2024

  In this work, we improve the generative replay in a continual learning setting to perform well on challenging scenarios. Because of the growing complexity of continual learning tasks, it is becoming more popular, to apply the generative replay technique in the feature space instead of image space. Nevertheless, such an approach does not come without limitations. In particular, we notice the degradation of the continually trained...

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• Infographics in Educational Settings: A Literature Review

  Publikacja

  • S. A. Bhat
  • S. Alyahya

  - IEEE Access - Rok 2024

  Infographics are visual representations of data that utilize various graphic elements, including pie charts, bar graphs, line graphs, and histograms. Educators and designers can maximize the potential of infographics as powerful educational tools by carefully addressing challenges and capitalizing on emerging technologies. However, current education systems showcase the need for development guidelines and the best practices targeted...

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• Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

  Publikacja

  • A. Czapiewska
  • A. Łuksza
  • R. Studański
  • Ł. Wojewódka
  • A. Żak

  - IEEE Access - Rok 2024

  Underwater wireless communication remains a challenging topic, particularly for applications such as wreck penetration where multipath and Doppler effects are very intense. These effects are becoming even more difficult to mitigate for fast data transmission systems that utilize wideband signals. Due to the low propagation speed of acoustic wave in the water, there is a significant difference between the Doppler shift for lower...

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• Review of Recent Advancement on Nature/Bio-inspired Antenna Designs

  Publikacja

  • F. Azam
  • S. Shah
  • S. Bashir
  • S. Kozieł

  - IEEE Access - Rok 2024

  This article presents an extensive examination of antennas rooted in nature and biology, showcasing their remarkable performance across a wide spectrum of frequencies—from microwave to terahertz. The limitations of traditional antenna design have become increasingly evident in the face of burgeoning demands for novel communication technologies. Conventional analytical-equation-based approaches struggle to deliver the combined performance...

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• Improving Output Performance of the Ultrasonic Multicell Piezoelectric Motor by Development the Multi-Rotor Structure

  Publikacja

  • R. Ryndzionek

  - IEEE Access - Rok 2024

  In recent years, many researches have been carried out on piezoelectric multi-rotor structures. This paper describes the analysis, development and experimental process of an ultrasonic multi-cell piezoelectric motor using a multi-rotor structure. In this design, three independent cells have been integrated into a mechatronic system. Analytical model and finite element method are used for modal and dynamic analysis of the proposed...

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