Parabolic Equation Accumulated Split Error and Its Correction Method for Tropospheric Radio Propagation by Peipei Wei, Xiaoyan Du, Xinwei Hu, Changyin Jiang

“…An increasingly popular approach of modeling electromagnetic wave propagation in the troposphere is to use the slip-step Fourier transform (SSFT) numerical algorithm to solve a parabolic equation (PE). …”
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Broadband Circularly Polarized CPW-Fed Monopole Antenna with a Via-Free CRLH-TL Unit Cell by Liangyuan Liu, Xiangqun Shi

“…The asymmetric perturbation is introduced to excite the circularly polarized (CP) electromagnetic wave. The influence of interdigital capacitance on the electrical performance of the antenna is analyzed theoretically and experimentally. …”
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Modeling of the 2.4 GHz wireless channel path loss in substation by Qiang LI, Hongxin ZHANG, Jiaqi LUO, Yang LU, Jianqi LI, Yinghua LV

“…In order to assess the influence of electromagnetic interference in the substation of the electric power communication system,frequency measurement method was adopted to obtain the data of 2.4 GHz electromagnetic wave path loss of the substation of 110 kV and 220 kV in a certain city.By using the method of minimum mean square error (MMSE) and cumulative sum (CUSUM) to estimate the parameters of path loss model such as path loss index and the standard deviation,the path loss model was set up according to measured data,respectively.The simulation results show that the gap between estimation results and the measured values is not big.In addition,a ZigBee simulation system was constructed to simulate the relationship of bit error rate (BER) varies with distance in two cases of the signal to noise ratio (SNR) at 5 dB and 10 dB respectively.A research basis for short distance wireless communication devices decorated in the substation environment was provided.…”
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Rigorous 2D Model for Study of Pulsed and Monochromatic Waves Propagation Near the Earth’s Surface by Seil S. Sautbekov, Yuriy K. Sirenko, Nataliya P. Yashina, Aleksey A. Vertiy

“…A model problem considered in the paper allows solving rather complex 2D problems of the electromagnetic wave propagation with a required accuracy using conventional personal computers. …”
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A thin, wideband transmissive cross polarization converter by Negin Pouyanfar, Javad Nourinia, Changiz Ghobadi, Vahid Nayyeri

“…Metallic vias connect the upper and lower layers of the construction. The radiated electromagnetic wave with linear polarization can be transformed into its orthogonal component in the transmission mode by the proposed converter. …”
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NONCONVENTIONAL TECHNIQUE TO MAKE BOROSILICATE GLASS FROTH by Lucian Paunescu, Sorin Mircea Axinte, Bogdan Valentin Paunescu

“…In this experiment, the non-conventional electromagnetic wave heating technique was adopted and as an originality, a mixed heating method (partly direct and partly indirect) was chosen to keep safe the inner structure of the froth. …”
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Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma by Douglas Letsholathebe, Kgakgamatso M. Mphale, Samuel Chimidza

“…Accurately measured momentum transfer collision frequency and electron density for fire plasma enable correct simulation of electromagnetic wave propagation in the medium. The simulation is essential for designing high-performance systems suitable for the environment. …”
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Beam Synthesis with Low-Bit Reflective Coding Metamaterial Antenna: Theoretical and Experimental Results by Qinhao Wu, Yongqiang Cheng, Xiang Li, Hongqiang Wang

“…It can realize real-time control of electromagnetic wave and build multifunction radar array system. …”
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Topological Cavity Chains via Shifted Photonic Crystal Interfaces by Wei Li, Junhui Hu, Hai-Xiao Wang

“…A recent work shows that the electromagnetic wave can be effectively trapped via the shifted photonic crystal interfaces (SPCIs), which offers an alternative approach to realizing the photonic cavity. …”
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Estimation of wireless channel fading model in maritime communication for complex meteorological environment by Yasheng DAI, Bolin MA, Guangxue YUE

“…Due to the influence of complex marine environmental factors such as sparse scattering of electromagnetic wave on the ocean surface, wave shadow fading, complex meteorological environment.It is extremely hard to model the fading of wireless channel in maritime communication environment.After analyzing the influence of meteorological environment and multipath channel fading via direct-path, specular-path and diffuse-path on marine wireless communication channel fading, the estimation of wireless channel fading model in maritime communication for complex meteorological environment (EWCFM-CME) was proposed.An improved bee colony algorithm was designed to estimation the parameter of EWCFM-CME.In order to improve the efficiency and accuracy of search algorithm, an iterative function with sin(·) function as operator was designed in search scheme of bee colonies.The leading bee received the detection bee solution to update itself with probability P.It prevents the solution algorithm from falling into local optimization.The simulation results show that, compared with fluctuate two-ray (FTR) fading model and round earth loss (REL) model, the mean absolute error (MAE) of EWCFM-CME increased by 13.58% and 11.43% By comparing EWCFM-CME with cuckoo search, genetic algorithm and simulated annealing algorithm, the search time is reduced by 60.48%, 45.18% and 43.23%, respectively.…”
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Indoor wireless signal coverage and enhancement based on passive reconfigurable intelligent metasurface by Haixia LIU, Hao YI, Xiangjin MA, Shuyao YUE, Xudong KONG, Pei MA, Yuxin ZENG, Long LI

“…Reconfigurable intelligent metasurface (RIS) is a new type of artificial electromagnetic metamaterial, which can control the frequency, amplitude, phase, polarization, propagation direction and wave type of electromagnetic wave flexibly.In the field of wireless communication, RIS can be used to reconstruct the wireless communication channel to achieve blind coverage of wireless signals and improve the communication quality.First, the development and research status of RIS, the key technologies and application scenarios of RIS were summarized and analyzed.Then, a new passive RIS was proposed to realize the characteristics of the aperture reconfiguration and beam reconfiguration through passive coding and splicing principle, which had the advantages of low cost, low power consumption and low complexity.Finally, the blind area coverage enhancement experiment of indoor wireless signal based on passive reflection metasurface was carried out.The effectiveness of passive splicing metasurface in wireless communication blind coverage scenarios was proved by comparison between simulation and field measurement.In addition, for 5G/6G millimeter wave communication, the passive RIS with double-layer cross dipole elements was designed and applied to typical indoor L-shaped corridor scene to verify the enhancement effect of indoor wireless signal coverage.…”
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Fabrication and modulation of flexible electromagnetic metamaterials by Yanshuo Feng, Misheng Liang, Xiaoguang Zhao, Rui You

“…Flexible electromagnetic metamaterials can be designed to exhibit specific responses to electromagnetic waves within a particular frequency range. …”
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Metasurface-Based Cylindrical Lenses and Their Antenna Gain Enhancement by Yuping Shang, Wenjun Zhou, Cheng Liao

“…A focused beam is observed at the objective focal point for each lens illuminated by a plane electromagnetic wave with transverse magnetic or transverse electric polarization. …”
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Broadband terahertz holography using isotropic VO2 metasurfaces by Jiayu Zhao, Runxuan Zhang, Sicheng Cao, Mingwei Zhuang, Zhengyong Song

“…Abstract Vanadium dioxide (VO2) exhibits exceptional phase transition characteristics that enable dynamic manipulation of electromagnetic wave. In this study, a novel design of bilayer isotropic metasurface is introduced. …”
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Electromagnetic target detection model for unmanned aerial vehicle platforms based on Bayesian detection by DENG Wenjie, CHEN Song, WU Di, LIU Kaiyue, XU Ziliang, HE Runze

“…However, aiming at electromagnetic radiation sources, the Boolean perception model fails to accurately reflect the propagation and detection characteristics of electromagnetic wave signals. To address this issue, this paper, grounded in the Bayesian signal detection theory and utilizing the distributional characteristics of antenna pattern diagrams, constructs an electromagnetic detection model for unmanned aerial vehicle platforms. …”
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Real-Time Duct Prediction and Propagation Analysis Using Genetic Algorithm-Based RFC and Parabolic Equation Method by Jun Heo, Doyoung Jang, Hosung Choo, Dong-Yeop Na, Yong Bae Park

“…Additionally, using the PE method, the electromagnetic wave propagation for each refractivity is analyzed and compared. …”
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Single-cell bilayer design of a terahertz six-channel metasurface for simultaneous holographic and grayscale images by Zhiqiang Du, Chunhui Zhu, Zhengyong Song

“…Our research combines intensity modulation controlled by the Malus’s law and phase modulation of geometry and propagation to merge amplitude, phase, and polarization manipulation of electromagnetic wave. A “six-in-one” meta-device is constructed by combining phase change properties of VO2 to realize simultaneous near-field grayscale imaging and far-field holography. …”
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Using Improved XGBoost Algorithm to Obtain Modified Atmospheric Refractive Index by Yanbo Mai, Zheng Sheng, Hanqing Shi, Qixiang Liao

“…Atmospheric refraction is a special meteorological phenomenon mainly caused by gas molecules and aerosol particles in the atmosphere, which can change the propagation direction of electromagnetic waves in the atmospheric environment. Atmospheric refractive index, an index to measure atmospheric refraction, is an important parameter for electromagnetic wave. …”
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Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking by Zhibin Luo, Jicheng Ding, Lin Zhao

“…The PLL is a very popular and practical approach for tracking the GNSS carrier signal which propagates in the form of electromagnetic wave. However, a PLL with constant coefficient would be suboptimal. …”
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Multifunctional Janus-Structured Polytetrafluoroethylene-Carbon Nanotube-Fe3O4/MXene Membranes for Enhanced EMI Shielding and Thermal Management by Runze Shao, Guilong Wang, Jialong Chai, Jun Lin, Guoqun Zhao, Zhihui Zeng, Guizhen Wang

“…Thanks to the strategic distribution of the MXene conductive reflection layer and the silk-like FCFe electromagnetic wave’s absorption layer, the membranes achieve robust electromagnetic interference shielding and effective antireflection through the absorption-reflection-reabsorption mechanism. …”
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