Results 21 to 30 of about 1,503 (205)
Low-index-metamaterial for gain enhancement of planar terahertz antenna
AIP Advances, 2014 We theoretically present a high gain planar antenna at terahertz (THz) frequencies by combing a conventional log-periodic antenna (LPA) with a low-index-metamaterial (LIM, |n| < 1).
Qing-Le Zhang +4 more
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On the potential of multicast in millimeter wave vehicular communications [PDF]
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), 2021 In this paper we explore the potential of doing multicast transmissions in millimeter wave vehicular communications using beamwidth-aware scheduling. Using a dataset of measured vehicle positions in a highway scenario, we show that often a considerable number of neighbouring vehicles can be reached with a single millimeter wave transmission ...
Mendler, Gereon, Heijenk, Geert
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Millimeter Wave Communications
, 2016 Millimeter wave (mmWave) technologies promise to revolutionize wireless networks by enabling multi-gigabit data rates. However, they suffer from high attenuation, and hence have to use highly directional antennas to focus their power on the receiver.
Hassanieh, Haitham +3 more
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A Temporal Millimeter Wave Propagation Model for Tunnels Using Ray Frustum Techniques and FFT
International Journal of Antennas and Propagation, 2014 A temporal millimeter wave propagation model for tunnels is presented using ray frustum techniques and fast Fourier transform (FFT). To directly estimate or simulate effects of millimeter wave channel properties on the performance of communication ...
Choonghyen Kwon +5 more
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The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications
IEEE Journal of Microwaves, 2021 Ever since the deployment of the first-generation of mobile telecommunications, wireless communication technology has evolved at a dramatically fast pace over the past four decades. The upcoming fifth-generation (5G) holds a great promise in providing an
Wei Hong +19 more
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Music recognition based on diffractive neural networks
iScienceSummary: Diffractive neural networks offer high-speed and energy-efficient computation for artificial intelligence hardware, yet their application to time-series signal processing remains underexplored.
Xingcen Ge, Zirui Feng, Qian Ma
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Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array
International Journal of Antennas and Propagation, 2014 A slot-microstrip-covered and waveguide-cavity-backed monopulse antenna array is proposed for high-resolution tracking applications at Ka-band. The monopulse antenna array is designed with a microstrip with 2×32 slots, a waveguide cavity, and a waveguide
Li-Ming Si +3 more
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Secure Communication in Millimeter Wave Relaying Networks
IEEE Access, 2019 The use of relay can expand the coverage of millimeter-wave (mmWave) signals, whereas it may increase the risk of information leakage due to the additional link from source to relay.
Ruiqian Ma +4 more
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Applied Sciences, 2022 Simply speaking, automatic driving requires the calculation of a large amount of traffic data and, finally, the obtainment of the optimal driving route and speed.
Jia Liang +3 more
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Advanced Electronic MaterialsSpace‐time‐coding metasurfaces (STCMs) enable simultaneous controls of electromagnetic wave across multiple harmonics, but designing high‐performance coding sequences in real time remains challenging.
Jiang Han Bao +6 more
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