Results 1 to 10 of about 1,547 (268)
Millimetric waves communications for Railways
Transportation Research Procedia, 2023 Peer-review under responsibility of the scientific committee of the Transport Research Arena (TRA) Conference ; International ...
Berbineau, Marion +8 more
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Electronics Letters, 2023 A dual‐polarised symmetrically cross‐slotted square patch (SCSSP) antenna with multimode resonance is proposed for 5G millimetre‐wave broadband applications.
Qi Wu +5 more
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Sensors, 2023 A very compact waveguide orthomode transducer (OMT) is described in this paper. The design is characterized with a twofold rotationally symmetric cross-section in the probing area, adapted from a side-coupling OMT design, simultaneously enabling low port-
Nelson J. G. Fonseca
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HERAS: A Modular Matlab Tool Using Physical Optics for the Analysis of Reflector Antennas
Sensors, 2023 HERAS is a tool developed in Matlab for the analysis of reflector antennas using physical optics (PO) theory. Its graphical user interface (GUI) and source code are freely available for educational and research purposes.
Alejandro Baldominos +4 more
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3D complex envelope leapfrog ADI‐FDTD algorithm
Electronics Letters, 2021 This paper presents a 3D complex envelope leapfrog alternating‐direction‐implicit finite‐difference time‐domain method. Compared with the previous work, the proposed method costs less computation runtime and memory while maintaining similar accuracy. The
Yunyang Dong, Jianyi Zhou
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IEEE Journal of Microwaves, 2022 Septum polarizers have been used in waveguide systems for over 50 years and are very popular in communication satellites operating in circular polarization. With the progress of computational electromagnetics and computer hardware, combined with advances
Nelson J. G. Fonseca +1 more
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Generalized One-Dimensional Parallel Switching Matrices With an Arbitrary Number of Beams
IEEE Journal of Microwaves, 2021 This paper introduces a novel family of one-dimensional switching matrices, also known as beamforming networks (BFNs), which can be sized for an arbitrary number of beams.
Jiro Hirokawa, Nelson J. G. Fonseca
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Connecting Networks for Two-Dimensional Butler Matrices Generating a Triangular Lattice of Beams
IEEE Journal of Microwaves, 2021 Connecting networks for two-dimensional beamforming matrices are discussed. They provide a suitable interconnection between the output ports of a Butler matrix and antenna array ports, transforming a square (and more generally, rectangular) lattice of ...
NELSON J. G. FONSECA +5 more
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IEEE Journal of Microwaves, 2022 Satellite, fifth generation (5G), and sixth generation (6G) mobile communication systems operating at micro- and millimeter wave frequencies are an essential pillar in advanced network architectures for high-throughput low latency services.
Tobias Chaloun +6 more
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Technology of Internet of Things Responding to Natural Disasters [PDF]
EAI Endorsed Transactions on Internet of Things, 2022 Numerous countries have been affected by natural disasters, the seriousness of which consequences is self-evident, such as power failure, building collapse and communication interruption. With the rapid development of science and technology,
Shu-Wen Chen, Jia-Qi Shao, Hui-Sheng Zhu
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