Results 241 to 250 of about 3,406,012 (295)
Grouping-Based and Position-Based Phase Optimization for RIS-Assisted Millimeter-Wave Vehicular Communications. [PDF]
Sensors (Basel)Xu Z, Yu G, Luo Y.
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System-level characterisation of hybrid LEO-terrestrial link performance under Ka-band propagation and interference constraints. [PDF]
Sci RepRajkumar S, Menon A, Gupta S, Singh I.
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Quenching of Flame Propagation with Heat Loss
Journal of Mathematical Chemistry, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Simon, Peter L. +3 more
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Waveguide propagation-loss measurement technique
Optics Letters, 1987A novel nondestructive propagation-loss measurement technique for single-mode waveguides is demonstrated. The method calculates the total propagation-loss coefficient from the measured ratio of the retroreflected and transmitted light from the waveguide and is independent of the coupling efficiency of the input light.
R, Arsenault +3 more
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Propagation losses in gold nanowires
Optics Communications, 2014Abstract We report direct measurement of propagation losses in single gold nanowires around visible and near-infrared bands. By directly measuring the propagation-distance-dependent output of the nanowire via fiber-taper-assistant near-field-coupling technique, we obtain a typical loss of 0.89 dB/µm at 785-nm wavelength in a 210-nm-diameter gold ...
Xiyuan Li +3 more
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Propagation Loss Characteristics of Berlinite
IEEE 1984 Ultrasonics Symposium, 1984Berlinite (U-A1P04) has been of interest for SAW substrates for several years because of its combination of temperature stability and moderate piezoelectric coupling ( Av/v). In evaluating berlinite as a replacement for quartz in high frequency SAW devices, anomalies were discovered in its propagation loss-frequency-temperature characteristics.
R.F. Steinberg +4 more
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Propagation Losses in Urban Areas
2014In the article a modified UTD method for determining propagation losses in the big-city area has been presented. Modification of this method consists in using a model of physical geometry of wave propagation and using patterns occurring in the UTD method for reflection coefficients and diffraction of waves at corners.
Marian Wnuk, Leszek Nowosielski
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Propagation loss within buildings
1999 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, 2003Along the last years, an increasing demand for mobile radio systems operating within buildings has been observed. Considering the complex structure of a building, an important problem for planning such systems is the prediction of propagation loss. An empirical prediction model to be used in the frequency range from 0.8 to 2.0 GHz is proposed in this ...
R.M. de Souza, H.S. de Assis
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The Impact of Loss on Ultrasound Propagation
2002A marked feature of ultrasound propagation in most biological tissues is the frequency-dependent loss suffered by the pulse. The measurement of this parameter is generally accepted to be an important tissue parameter, but many artefacts, in particular those due to diffraction effects, compromise such an approach towards tissue characterisation.
Sidney Leeman +2 more
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The sonar equation and the definitions of propagation loss
The Journal of the Acoustical Society of America, 2003A rigorous application of the traditional definition of sonar equation terms leads to the appearance of an unexpected factor, not routinely included, equal to the ratio of the characteristic impedance at the receiver to that at the source. An omission of this factor can lead to non-negligible errors for realistic conditions. It is further argued that a
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