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RIS-based indoor wireless communication signal enhancement system
Published 2022-12-01“…By utilizing the tunable performances of the reconfigurable intelligent surface (RIS) to manipulate the reflected electromagnetic waves, an indoor wireless communication signal enhancement system was constructed, which could improve the signal quality of the receiving terminal in where the initial wireless signals were weak.First, a RIS unit cell with dynamically tunable phase characteristics was designed, and the dynamic change of the 2 bit reflection phases was realized by switching the working states of the two active diodes.Then, experiments were conducted to verify that the proposed RIS could dynamically reshape the beam direction.Finally, a host computer and field programmable gate array (FPGA) were used to realize the intelligent control of the coding sequences applied onto the proposed RIS.By changing the spatial phase distribution on the RIS aperture, the output beam could be controlled in real-time.By traversing the pre-loaded coding sequences, the enhancement of received signal in indoor wireless environments had been experimentally demonstrated.Both simulation and experiment results verify that the proposed RIS system can effectively and dynamically improve the quality of the indoor wireless signals.The received signal is increased by an average of 8.9 dB, with a maximum of 22 dB.The proposed work may provide basic hardware technical support for the optimization of 5G and the next-generation communication networks.…”
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1262
CALCULATION OF INDUCTANCE OF THE INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR
Published 2017-03-01“…Interior permanent magnet synchronous motor (IPMSM) refers to salient-pole synchronous motors, characterized by inequality of inductances of longitudinal (d) and transverse (q) axes. Electromagnetic torque of IPMSM consists of two components: active torque and reactive torque; the latter depends on inductances of d and q axes. …”
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1263
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1264
Polnische Nasalvokale, grafisch geschrieben als <ę> und <ą>. Eine Vielzahl von Studien zur auditiven, artikulatorischen und akustischen Phonetik
Published 2025-02-01“…In chronological order, these included palatography, kymography, labiography, electromyography, fibero-optic endoscopy, radiography, MRI, ultrasonography, velotrace device, X-ray microbeam, electromagnetic articulation, and nazometry. Auditory studies have also been a significant part of the research, especially in adults and children. …”
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1265
A Compact Planar Ultra-Wideband Array Antenna
Published 2023-01-01“…The quick development of these antennas is due to the wide bandwidth requirements of pulse radar, ground penetrating radar, electromagnetic compatibility, spaceborne communication systems, stealth target detection, and more. …”
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1266
Kilonova/Macronova Emission from Compact Binary Mergers
Published 2016-01-01“…Kilonova/macronova is emission powered by radioactive decays of r-process nuclei and it is one of the most promising electromagnetic counterparts of gravitational wave sources. …”
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1267
Innovative Radiating Systems for Train Localization in Interference Conditions
Published 2013-01-01“…Secondly, FRPA (Fixed Radiation Pattern Antenna) and CRPA (Controlled Radiation Pattern Antenna) phased array configurations of miniaturized patch antennas are studied by means of electromagnetic commercial tools and phased array optimization algorithms. …”
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1268
An ultra-wideband thin metamaterial linear cross-polarization conversion
Published 2025-01-01“…The compact, thin, and ultra-wideband design makes this CPC a promising candidate for applications in advanced communication systems such as radar cross-section reduction and electromagnetic interference suppression. The results are validated further by experimental measurements of the fabricated CPC.…”
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1269
A Hybrid 3DMLUV-FIA Method for Scattering from a 3D Dielectric Object above a 2D Dielectric Rough Surface
Published 2016-01-01“…The electromagnetic scattering from the composite model of a three-dimensional (3D) dielectric object located above a two-dimensional (2D) dielectric rough surface is analyzed in this work. …”
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1270
ANALYSIS FOR SOLENOID VALVE FAILURE BASED ON MULTI-PHYSICS FINITE ELEMENT MODEL
Published 2019-01-01“…Meanwhile, the coupling effect of thermal stress caused by high temperature and the mechanical stress can squeeze coils resulting in the continuous short-circuit of coils. When the electromagnetic force of iron core is lower than its threshold, the iron core will not overcome the elasticity to move up and down and finally the failure of the SV will happen. …”
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1271
A A three-phase induction motor dynamic framework regulated by predictive and intelligent optimizations.
Published 2025-01-01“…This article compares IM electromagnetic torque and load currents under each control technique to determine the most flexible and robust prediction strategy. …”
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1272
A Wideband Waveguide Antenna with Nearly Equal E- and H-Plane Radiation Patterns
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1273
Design of UWB Filter with WLAN Notch
Published 2012-01-01“…The design structure was simulated on electromagnetic circuit simulation software and fabricated by microwave integrated circuit technique. …”
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1274
Anisotropic Scattering Characteristics of a Radially Multilayered Gyrotropic Sphere
Published 2017-01-01“…Based on the completeness and noncoplanar properties of vector spherical wave functions (VSWFs), analytical expressions of the electromagnetic fields in each gyrotropic layer are first derived. …”
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1275
Trends in the applications of terahertz radiation in oral oncology treatments
Published 2024-06-01“…In Terahertz radiation, known as THz-rays, falls within a special range of frequencies in the electromagnetic spectrum, from 0.1 to 10 THz. This radiation has unique benefits for medical imaging, security screening, and non-destructive testing. …”
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1276
Transcendence: what on earth are we talking about?
Published 2011-06-01“…Songs are more than longitudinal sound vibrations, sunsets more than transverse electromagnetic oscillations, inspirations more than the discharge of neurons, all touched with a mystery that deepens the more we contemplate and seek to understand (Harrison 1985: 273). …”
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1277
Mathematical Model of an Open Area of Space Sensor
Published 2020-03-01“…For the effective use of dielectric sensors, optimization of the design parameters of the sensors, such as the depth of penetration of the electromagnetic fi and the magnitude of the sensor signal, is of great importance. …”
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1278
Shining light on the dark sector: search for axion-like particles and other new physics in photonic final states with FASER
Published 2025-01-01“…Signal events are characterised by high-energy deposits in the electromagnetic calorimeter and no signal in the veto scintillators. …”
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1279
Groundwater Inrush Control and Parameters Optimization of Curtain Grouting Reinforcement for the Jingzhai Tunnel
Published 2021-01-01“…Based on the systematic study on the characteristics of water and mud inrush during the excavation of Jingzhai tunnel, the mechanism of water inrush seepage transformation caused by excavation disturbance is analyzed. By means of electromagnetic geophysical prospecting, the potential water bearing area of the tunnel was analyzed. …”
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1280
Little strokes fell big oaks: The use of weak magnetic fields and reactive oxygen species to fight cancer
Published 2025-02-01“…Conventional treatments such as chemotherapy and radiation often lead to severe long-term side effects, including secondary cancers and tissue damage, highlighting the need for new, safer and more effective therapies, especially for young patients.Weak electromagnetic fields (WEMF) offer a promising non-invasive approach to cancer treatment. …”
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