Showing 1 - 20 results of 54 for search '"radio wave"', query time: 0.05s Refine Results
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    Generation of OAM Radio Waves with Three Polarizations Using Circular Horn Antenna Array by Xudong Bai, Ronghong Jin, Liang Liu, Junping Geng, Xianling Liang

    Published 2015-01-01
    “…Through reasonable configuration of phased antenna array using elements with three polarizations, the OAM radio waves with three polarizations for different states can be generated. …”
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    Anomalous Propagation of Radio Waves from Distant ILS Localizers Due to Ionospheric Sporadic‐E by J. Sakai, S. Saito, K. Hosokawa, I. Tomizawa

    Published 2020-08-01
    “…Abstract The ionospheric sporadic‐E (Es) layer occasionally causes anomalous propagation (AP) of VHF radio waves to distant locations. This effect, EsAP, may cause interference to VHF radio operation above 100 MHz. …”
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    A Novel Radio Wave Propagation Modeling Method Using System Identification Technique over Wireless Links in East Africa by Solomon T. Girma, Dominic B. O. Konditi, Ciira Maina

    Published 2018-01-01
    “…Transmission of a radio signal through a wireless radio channel is affected by refraction, diffraction and reflection, free space loss, object penetration, and absorption that corrupt the originally transmitted signal before radio wave arrives at a receiver antenna. Even though there are many factors affecting wireless radio channels, there are still a number of radio wave propagation models such as Okumura, Hata, free space model, and COST-231 to predict the received signal level at the receiver antenna. …”
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    Research on Antenna Propagation Loss Model in Rail Transit Tunnel based on Multi-dimensional Scenario Analysis by ZHAO Yifan, ZOU Jinbai, ZHAO Zhenglian, XU Zhipeng, ZHOU Qing

    Published 2025-01-01
    “…[Objective] As tunnel is one of the typical environments for rail transit wireless communication, the accurate prediction of radio wave signal strength in tunnels has always attracted wide attention and study. …”
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    Key Considerations in the Modeling of Tropical Maritime Microwave Attenuations by Yee Hui Lee, Yu Song Meng

    Published 2015-01-01
    “…Multiray propagations and ducting of radio waves have been highlighted and considered in over-sea path loss modeling and prediction. …”
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    Investigation of the Polycrystalline Silicon PV Cell Efficiency in 3D Approximation versus Electromagnetic Field under Monochromatic Illumination by Adama Ouedraogo, Boubacar Soro, Ramatou Konate, Fati Amadou Oumarou, Dieudonné Joseph Bathiebo

    Published 2021-01-01
    “…This manuscript is about the electric output of the silicon (Si) photovoltaic (PV) cell versus the electromagnetic field of a radio wave and a monochromatic illumination in three-dimensional (3D) assumptions. …”
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    Effect of Antenna Parameters on the Field Coverage in Tunnel Environments by Dawei Li, Junhong Wang

    Published 2016-01-01
    “…Radio wave propagation in confined spaces is consequent upon the reflections of boundaries; thus, the radiation characteristics of the antenna have significant influence on the field coverage in the confined space. …”
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    New Index to Characterize Ionospheric Irregularity Distribution by Endawoke Yizengaw

    Published 2023-09-01
    “…Hence, the DGRI appeared to be suitable parameter that can be used as a proxy to describe the essential features of ionospheric disturbances that may critically affect our radio wave application as well as to identify the “all clear” zone as a function of longitude, latitude, and local time—at a refreshment rate of 30 min or less.…”
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    Impact of Ship Motions on Maritime Radio Links by William Hubert, Yvon-Marie Le Roux, Michel Ney, Anne Flamand

    Published 2012-01-01
    “…This tool includes a deterministic two-ray model for radio-wave propagation over the sea surface. The geometrical 3D engine for ship motions has the advantage to be compatible with any propagation model and antenna structure.…”
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    Track-Before-Detect Procedures in AM Radio-Based Passive Radar by Yang Li, Hong Ma, Yuntao Wu, Li Cheng

    Published 2021-01-01
    “…Two types of linear equations according to the simplified radio wave propagation model are formulated, which is the key point of the proposed method. …”
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