Suggested Topics within your search.
Suggested Topics within your search.
- Physics 1
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81
Research and application of multi-beam antenna technology for home network based on SSPP technology
Published 2023-09-01“…High-quality home wireless network with large bandwidth, wide coverage, low latency and anti-interference is the key indicator to ensure user experience of fiber to the room (FTTR) Gigabit optical network.Traditional home network equipment mainly adopts single-beam single-polarized antenna design, which has become increasingly unable to meet the needs of high-quality network products under the background of large attenuation and strong interference.Antenna, as an indispensable component to realize conduction energy and air-interface electromagnetic wave transformation, can realize multiple functions by using its design freedom.High gain can reduce the power consumption of the radio frequency (RF) side to achieve the purpose of energy saving, and multi-beam can maintain high-performance network coverage without dead ends.Therefore, designing a multi-beam antenna with small size, high gain and flexible usage is of great value.Following the practical engineering and current academic research, a multi-beam antenna based on spoof surface plasmon polariton (SSPP) technology, covering the 5.1~5.9 GHz frequency band of Wi-Fi, was designed for home network products.Compared with traditional antennas, the test results of the antenna based on SPSS technology show that the coverage performance of the network in weak signal scenarios such as through-wall and cross-layer scenarios is improved greatly.It has great application prospects in increasingly miniaturized home terminal products.…”
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82
Experimental Study on the Dielectric Model of Common Asphalt Pavement Surface Materials Based on the L-R Model
Published 2021-01-01“…The establishment of a dielectric model of the asphalt pavement surface material is the premise and key to applying the electromagnetic wave technology to asphalt pavement nondestructive testing. …”
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83
Investigation of reactive power referring to recent studies of time-averaged stored energy density
Published 2025-01-01“…In this work, the transmission, dissipation, and storage of electromagnetic energy of either a sinusoidal alternating current or an electromagnetic wave traveling in a transmission line are addressed; a positive definite expression of time-averaged stored energy density instead of the usual non-positive definite one is proposed. …”
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84
Bandwidth Reconfigurable Metamaterial Arrays
Published 2014-01-01“…Metamaterial structures provide innovative ways to manipulate electromagnetic wave responses to realize new applications. …”
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85
Ultra‐Low Threshold Resonance Switching by Terahertz Field Enhancement‐Induced Nanobridge
Published 2025-01-01“…In this study, ultra‐low threshold resonance mode switching by strong nonlinear carrier transport beyond the semi‐classical Boltzmann transport regime using terahertz (THz) electromagnetic waves are demonstrated, whose energy is thousands of times smaller than the bandgap. …”
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86
Channel Mixer Layer: Multimodal Fusion Toward Machine Reasoning for Spatiotemporal Predictive Learning of Ionospheric Total Electron Content
Published 2024-12-01“…Abstract The spatiotemporal distribution of Total Electron Content (TEC) in ionosphere determines the refractive index of electromagnetic wave leading to the radio signal scintillation and deterioration. …”
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87
Salinity and Sugar Content Detection by Wideband Microwave–Based Patch Antenna Sensor
Published 2025-01-01“…The lightweight patch-antenna–based wideband sensor is designed to propagate the electromagnetic wave for the transmission and reception. …”
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88
Chiral exceptional point enhanced active tuning and nonreciprocity in micro-resonators
Published 2025-01-01“…Such wafer-scale nano-manufacturing of chiral electro-optic modulators and the chiral EP-tailored tunning may facilitate new micro-resonator functionalities in quantum information processing, electromagnetic wave control, and optical interconnects.…”
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89
Linear and nonlinear resonant properties of electron gas in n-InSb and graphene layers in terahertz range in bias magnetic fields
Published 2025-01-01“…The simplest three-layer structures demonstrate the sharp nonlinear switching of the transparency of THz waves and the bistability under relatively low values of amplitudes of the incident electromagnetic wave.…”
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90
Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions
Published 2025-01-01“…Hyperspectral radiance measurements afford a useful means to retrieve these thermodynamic variable fields by harnessing the rich information contained in the electromagnetic wave spectrum of the atmospheric radiation. …”
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91
Hybrid electromagnetic and moisture energy harvesting enabled by ionic diode films
Published 2025-01-01“…Here, we disclose a coupling effect of electromagnetic wave absorption and moist-enabled generation on carrier transportation and energy interaction regulated by ionic diode effect. …”
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92
A Deep-Learning Approach to a Volumetric Radio Environment Map Construction for UAV-Assisted Networks
Published 2024-01-01“…This neglects the altitude-related characteristics of electromagnetic wave propagation and confines REMs to 2D formats, which limits the comprehensive and continuous visualization of propagation environment variation in spatial dimensions. …”
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93
Self-Assembly of Binderless MXene Aerogel for Multiple-Scenario and Responsive Phase Change Composites with Ultrahigh Thermal Energy Storage Density and Exceptional Electromagnetic...
Published 2023-12-01“…Owing to the suggested tactic, the prepared PCCs achieves ultrahigh energy storage density and realize 99.9998% electromagnetic wave energy attenuation.…”
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94
Optimizing microstructure for enhanced performance: A novel approach to EMI shielding with thin Mg98.5Zn0.5Y alloy sheets
Published 2025-01-01“…The superior EMI shielding performance is attributed to the interface between the α-Mg matrix and 14H-LPSO phases with contrasting conductivities, enhancing electromagnetic wave reflection and propagation within the shielding system. …”
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95
Three-Dimensional Inversion of Borehole-Surface Resistivity Method Based on the Unstructured Finite Element
Published 2021-01-01“…The electromagnetic wave signal from the electromagnetic field source generates induction signals after reaching the target geological body through the underground medium. …”
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96
The representative scientific results of the China Seismo-Electromagnetic Satellite
Published 2025-01-01“…The fourth result is that statistical features of seismic-ionospheric disturbances were revealed and the direct observational evidence for the electromagnetic wave propagation models in the lithosphere-atmosphere-ionosphere was also confirmed. …”
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97
Ultralow UV absorber content in 3D printed nanocomposites: maximizing printability and microwave absorption efficiency
Published 2025-01-01“…The increasing prevalence of electromagnetic wave exposure in our daily life, particularly within the 100 MHz–300 GHz range, necessitates advancements in microwave absorption materials. …”
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98
Statistical Downscaling Method for Vegetation Optical Depth Based on NDVI
Published 2025-01-01“…Spatial and temporal similarities and differences of VOD and NDVI in China from 2003 to 2022 are compared, between C-band (electromagnetic wave frequencies of 4-8 GHz), X-band (frequencies of 8-12 GHz), and Ku-band (frequencies of 12-18 GHz), as well as relative value differences across various vegetation types. …”
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99
Intrinsic Pulse Widths of FRB 20121102A and Calculation of Broadening from Propagation and Instrumental Effects
Published 2025-01-01“…The pulse widths of fast radio bursts are always broadened due to the scattering of the plasma medium through which the electromagnetic wave passes. The recorded pulse width will be further affected by the radio telescopes since the sampling time and the bandwidth cannot be infinitely small. …”
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100
Physics for Scientists and Engineers with Modern physics /
Published 2008Table of Contents: “…Introduction, measurement, estimating -- Mechanics -- Describing motion -- Kinematics in two or three dimensions -- Dynamics -- Using Newton's laws -- Gravitation and Newton's synthesis -- Work and energy -- Conservation of energy -- Linear momentum -- Rotational motion -- Angular momentum -- Static equilibrium -- Fluids, vibrations, waves, sound -- Fluids -- Oscillations -- Wave motion -- Sound -- Kinetic theory and thermodynamics -- Temperature, thermal expansion, and the ideal gas law -- Kinetic theory of gases -- Heat and the first law of thermodynamics -- Second law of thermodynamics -- Electricity and magnetism -- Electric charge and electric field -- Gauss's law -- Electric potential -- Capacitance, dielectrics, electric energy storage -- Electric currents and resistance -- DC circuits -- Magnetism -- Sources of magnetic field -- Electromagnetic induction and faraday's Law -- Inductance, electromagnetic oscillations -- Maxwell's equations and electromagnetic waves -- Light -- Lenses and optical instruments -- The wave nature of light -- Diffraction and polarization -- Modern physics -- Special theory of relativity -- Early quantum theory and models of the atom -- Quantum mechanics -- Quantum mechanics of atoms -- Molecules and solids -- Nuclear physics and radioactivity -- Nuclear energy -- Elementary particles -- Astrophysics and cosmology.…”
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