Results 251 to 260 of about 851,032 (302)

Wave transmission through structural inserts

The Journal of the Acoustical Society of America, 2001
The transmission of waves through two discontinuities in a one-dimensional waveguide system is considered. Attention is focused on transmission through a structural insert, which is defined here to be a waveguide segment which is inserted into an otherwise continuous structural member with different properties.
Mace, B.R., Jones, R.W., Harland, N.R.
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Evidence of Localized Wave Transmission

Physical Review Letters, 1989
The feasibility of launching an acoustic directed energy pulse train was tested experimentally. Excellent agreement between theoretical and experimental results was obtained.
, Ziolkowski, , Lewis, , Cook
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Full-wave transmission-line theory

IEEE Transactions on Magnetics, 2003
This paper presents a full-wave model of the propagation along interconnects consisting of ideal conducting thin wires. It consists of two coupled differential-integral equations of the first kind with singular kernels and is solved applying the collocation method on staggered meshes.
MIANO, GIOVANNI, MAFFUCCI, ANTONIO, VILLONE F.   +2 more
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WAVE TRANSMISSION IN DISPERSIVE MEDIA

Mathematical Models and Methods in Applied Sciences, 2007
The aim of this paper is to study the reflection-transmission of geometrical optic rays described by semi-linear symmetric hyperbolic systems such as the Maxwell–Lorentz equations with the anharmonic model of polarisation. The framework is both that of Donnat and Williams since we consider dispersive media and profiles with hyperbolic (imaginary ...
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Acoustic-wave transmission in semiconductor superlattices

Physical Review B, 1988
Acoustic-phonon transmission and reflection amplitudes are evaluated for semiconductor superlattices. The calculation is based on a finite application of the transfer-matrix method, which permits one to take into account both the crystal anisotropy and the coupling between excited modes of different polarizations.
A Catellani, L Sorba
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Seismic Wave Transmission

1956
When an earthquake occurs, energy, which may reach the order of 1025 ergs in the greatest earthquakes is released, within a few seconds or less, from a focal region inside the Earth whose linear dimensions may be of the order of several kilometres. The (somewhat indefinite) centre of the focal region is called the focus.
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Transmission theory of spherical waves

Electrical Engineering, 1938
This paper formulates the essential properties of spherical waves in terms of familiar engineering concepts. The physical picture resulting from this point of view facilitates the solution of certain physical problems, notably those having to do with reflection, refraction, shielding and power absorption.
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Beam Transmission of Ultra Short Waves

Proceedings of the IRE, 1928
Part I of this paper is devoted to a description of various experiments performed at wavelengths below 200 cm. Curves are given to show the effect of the earth and various types of inductively excited antennas called "wave directors." Part I is concluded with a discussion of beam and horizontally polarized radiation.
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MM wave transmission polarizer

1979 Antennas and Propagation Society International Symposium, 2005
Anisotropic dielectric transmission polarizers composed of alternate layers of foam and dielectric (See Figure 1) are used at microwave frequencies for producing circular polarization. This type of polarizer, however, is rarely used at millimeter wavelengths because the layers must be thinner than 1/3 wavelength; therefore they become quite thin.
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