Results 1 to 10 of about 55,571 (304)
Novel antenna configurations for wireless broadband vehicular communications [PDF]
, 2010 In this paper, mobile WiMAX trials are analysed to investigate the vehicular down-link performance for a number of on-car antenna configurations. The directionality and optimum polarization of the vehicular antennas are shown to improve both the range ...
Halls, DE, Nix, AR, Zaggoulos, G
core +3 more sources
IEEE Access, 2017 In this paper, we propose a polarization filtering-based transmission scheme to enhance the physical layer security in the dual-polarized satellite communication.
Zhangkai Luo, Huali Wang, Kaijie Zhou
doaj +1 more source
IEEE Access, 2017 A fast dual polarization hopping (FDPH) system is designed to enhance the physical layer secure transmission in fixed down-link satellite communications. In order to prevent the eavesdropper from detecting transmitted signals, a pair of dual polarization
Xiaokai Zhang +2 more
doaj +1 more source
Collocated Microstrip Antennas for MIMO Systems with a Low Mutual Coupling Using Mode Confinement [PDF]
, 2010 WOSInternational audienceIn this paper, collocated antennas for MIMO systems are presented. The structure is composed of a dual-polarized microstrip square patch combined to a dual-polarized microstrip square ring.
Avrillon, Stéphane +3 more
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Design and Fabrication of a dual-polar reflector array antenna for satellite applications [PDF]
فصلنامه علوم و فناوری فضایی, 2020 This paper presents a new unit to design dual linearly polarized reflectarray antenna at ku for satellite telecommunication. Two orthogonal sets of parallel dipoles are used for each polarization to achieve more degree of freedom in the design and wider ...
Alireza HeshmatiMoez +3 more
doaj +1 more source
Experimental study of depolarization and antenna correlation in tunnels in the 1.3 GHz band [PDF]
, 2019 Measurements have been carried out in a low-traffic road tunnel to investigate the influence of the polarization of the transmitting and receiving antennas on the channel characteristics. A real-time channel sounder working in a frequency band around 1.3
Challita, Frederic +5 more
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A New Approach for Ocean Surface Wind Speed Retrieval Using Sentinel-1 Dual-Polarized Imagery
Remote Sensing, 2023 A synthetic aperture radar (SAR) has the capability to observe ocean surface winds with a high spatial resolution, even under extreme conditions. The purpose of this work was to develop a new method for wind speed retrieval with the combination of SAR ...
Yuan Gao, Yunhua Wang, Weili Wang
doaj +1 more source
Compact Dual-Polarized/Duplex Filtering Antenna With High Isolation
IEEE Open Journal of Antennas and Propagation, 2023 This paper introduces novel dual-polarized/duplex filtering antennas with a novel filtering feeding network. The feeding network consists of an all-resonator structure, which shares a common dual-mode resonator.
Jianfeng Qian +5 more
doaj +1 more source
IEEE Photonics Journal, 2019 We present the first demonstration of an actively Q-switched orthogonally polarized dual-wavelength Nd:YLF/YVO4 Raman laser to our knowledge. The gain competition of the orthogonally polarized dual-wavelength fundamental laser at 1047 and 1053 nm ...
Zhiyu Zuo +7 more
doaj +1 more source
, 2008 We derive a generalised van Cittert-Zernike (vC-Z) theorem for radio astronomy that is valid for partially polarized sources over an arbitrarily wide field-of-view (FoV).
Carozzi, T. D., Woan, G.
core +2 more sources