Diffraction
36,804 resources related to Diffraction
IEEE Organizations related to Diffraction
Back to TopConferences related to Diffraction
Back to Top2016 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
This is the annual symposium for the IEEE Antennas and Propagation Society, and it is joint with the US National Committee of URSI's Radio Science Meeting.
2013 13th Mediterranean Microwave Symposium (MMS)
2013 MMS will include distinguished keynote speakers, parallel oral presentations and poster sessions. Topics cover stateofthe art as well as current progress and recent developments in several emerging topics related to RF, microwave engineering and applications.
2013 XVIIIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)
Theoretical aspects of electrodynamicsWaveguide and photonic crystal structuresScattering and diffractionInverse problems and synthesisPropagation in complex mediaAntennas and antenna arraysNumerical methods in electrodynamicsAcoustics: theory and applications
Days on Diffraction 2013 (DD)
Mathematical aspects of wave propagation, Asymptotic techniques, Scattering and diffraction, Electromagnetics, Sound propagation and vibration, Elastic waves and seismology, Nonlinear waves, Microwave and quantum waveguides, Inverse problems, Numerical approaches, Nonstationary phenomena
2010 URSI International Symposium on Electromagnetic Theory (EMTS 2010)
all aspects of electromagnetic theory and its applications
Periodicals related to Diffraction
Back to TopAntennas and Propagation, IEEE Transactions on
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Antennas and Wireless Propagation Letters, IEEE
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Lightwave Technology, Journal of
All aspects of optical guidedwave science, technology, and engineering in the areas of fiber and cable technologies; active and passive guidedwave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; systems and subsystems; new applications; and unique field trials.
Xplore Articles related to Diffraction
Back to TopAnalysis of a monopole mounted near an edge or a vertex
D. Pozar; E. Newman IEEE Transactions on Antennas and Propagation, 1982
The problem of a monopole mounted near the edge of a wedge or a vertex is considered. Three types of solutionssurface patch modeling, moment method/geometrical theory of diffraction (MM/GTD), and MM/eigenfunctionare presented, discussed, and compared with measurements. Results are in the form of input impedance and radiation patterns.
Several MaggiRubinowicz representations of the electric field
R. Meneghini; P. Shu; J. Bay IEEE Transactions on Antennas and Propagation, 1982
The MaggiRubinowicz technique for scalar and vector fields can be interpreted as a transformation of an integral over an open surface to a line integral around the rim and geometrical optics terms. Using this transformation, Maggi Rubinowicz analogues are obtained for several integral representations of the electric field. In the case of diffraction from a circular aperture, numerical comparisons between ...
Extensity of C3S EBSD Database and Its Structure Calculation
Jian Tian; Tao Wei; Hai'jun Xu 2010 2nd International Workshop on Database Technology and Applications, 2010
Crystal morphology, crystal structure and atomic coordinates of tricalcium silicate (C3S, 3CaO * SiO2) which is the main components of cement clinker were studied. Through Xray powder diffraction analysis and associated calculation, we gained the C3S precision cell parameters and atomic coordinates, then built threedimensional models of C3S crystal structure. A C3S crystal electron backscatter scattering diffraction (EBSD) precise crystallographic ...
High energy hybrid fibre regenerative amplifier for nanosecond laser pulse
Zhi Qiao; Xiaochao Wang; Wei Fan; Zunqi Lin 2015 11th Conference on Lasers and ElectroOptics Pacific Rim (CLEOPR), 2015
A hybrid fibrebulk regenerative amplifier with maximum output energy of 600uJ at 1Hz for narrowlinewidth nanoseconds laser is demonstrated. Nearly diffraction limited beam is obtained. The total gain is more than 63dB.
The effect of rounding vertices on the diffraction from polygons and other scatterers
Paul D. Smith; Audrey J. Markowskei 2016 URSI International Symposium on Electromagnetic Theory (EMTS), 2016
The changes induced in the near and farfield scattering by rounding the corners of an illuminated obstacle are discussed as a function of the radius of curvature near such corners. Dirichlet, Neumann or impedance boundary conditions are imposed on the surface. An integral equation formulation is employed; it is found that a graded mesh is necessary to obtain accurate results ...
More Xplore Articles
Educational Resources on Diffraction
Back to TopeLearning
Analysis of a monopole mounted near an edge or a vertex
D. Pozar; E. Newman IEEE Transactions on Antennas and Propagation, 1982
The problem of a monopole mounted near the edge of a wedge or a vertex is considered. Three types of solutionssurface patch modeling, moment method/geometrical theory of diffraction (MM/GTD), and MM/eigenfunctionare presented, discussed, and compared with measurements. Results are in the form of input impedance and radiation patterns.
Several MaggiRubinowicz representations of the electric field
R. Meneghini; P. Shu; J. Bay IEEE Transactions on Antennas and Propagation, 1982
The MaggiRubinowicz technique for scalar and vector fields can be interpreted as a transformation of an integral over an open surface to a line integral around the rim and geometrical optics terms. Using this transformation, Maggi Rubinowicz analogues are obtained for several integral representations of the electric field. In the case of diffraction from a circular aperture, numerical comparisons between ...
Extensity of C3S EBSD Database and Its Structure Calculation
Jian Tian; Tao Wei; Hai'jun Xu 2010 2nd International Workshop on Database Technology and Applications, 2010
Crystal morphology, crystal structure and atomic coordinates of tricalcium silicate (C3S, 3CaO * SiO2) which is the main components of cement clinker were studied. Through Xray powder diffraction analysis and associated calculation, we gained the C3S precision cell parameters and atomic coordinates, then built threedimensional models of C3S crystal structure. A C3S crystal electron backscatter scattering diffraction (EBSD) precise crystallographic ...
High energy hybrid fibre regenerative amplifier for nanosecond laser pulse
Zhi Qiao; Xiaochao Wang; Wei Fan; Zunqi Lin 2015 11th Conference on Lasers and ElectroOptics Pacific Rim (CLEOPR), 2015
A hybrid fibrebulk regenerative amplifier with maximum output energy of 600uJ at 1Hz for narrowlinewidth nanoseconds laser is demonstrated. Nearly diffraction limited beam is obtained. The total gain is more than 63dB.
The effect of rounding vertices on the diffraction from polygons and other scatterers
Paul D. Smith; Audrey J. Markowskei 2016 URSI International Symposium on Electromagnetic Theory (EMTS), 2016
The changes induced in the near and farfield scattering by rounding the corners of an illuminated obstacle are discussed as a function of the radius of curvature near such corners. Dirichlet, Neumann or impedance boundary conditions are imposed on the surface. An integral equation formulation is employed; it is found that a graded mesh is necessary to obtain accurate results ...
More eLearning Resources
IEEEUSA EBooks

Analytical Techniques for Materials Characterization
This chapter contains sections titled: Introduction and Overview X????ray Diffraction (XRD) Raman Spectroscopy Scanning Probe Microscopy (SPM) Scanning Electron Microscopy (SEM) and Energy Dispersive XRay Spectroscopy (EDX or EDS) Auger Electron Spectroscopy (AES) X????ray Photoelectron Spectroscopy (XPS) Secondary Ion Mass Spectrometry (SIMS) Summary This chapter contains sections titled: Exercises References

Engineering has been an essential collaborator in biological research and breakthroughs in biology are often enabled by technological advances. Decoding the double helix structure of DNA, for example, only became possible after significant advances in such technologies as Xray diffraction and gel electrophoresis. Diagnosis and treatment of tuberculosis improved as new technologies  including the stethoscope, the microscope, and the Xray  developed. These engineering breakthroughs take place away from the biology lab, and many years may elapse before the technology becomes available to biologists. In this book, David Lee argues for concurrent engineering  the convergence of engineering and biological research  as a means to accelerate the pace of biological discovery and its application to diagnosis and treatment. He presents extensive case studies and introduces a metric to measure the time between technological development and biological discovery.Investigating a series of major biological discoveries that range from pasteurization to electron microscopy, Lee finds that it took an average of forty years for the necessary technology to become available for laboratory use. Lee calls for new approaches to research and funding to encourage a tighter, more collaborative coupling of engineering and biology. Only then, he argues, will we see the rapid advances in the life sciences that are critically needed for lifesaving diagnosis and treatment.

This chapter contains sections titled: Overview Principles of LowEnergy Electron Diffraction LEED Equipment LEED Kinematics Surface Reconstruction Surface Lattices and Superstructures Silicon Reconstructions IIIV Compound Semiconductor Reconstructions Reflection HighEnergy Electron Diffraction Summary

Dispersion Compensation in Holograms Reconstructed by Femtosecond Light Pulses
This chapter describes how the spatiotemporal dispersion associated with the diffraction of broadband femtosecond light pulses through computer generated holograms (CGHs) can be compensated to a first order with a properly designed dispersion compensation module (DCM). The angular dispersion of the beam associated to CGHs leads to both spatial and temporal distortion of the pulse. Some experiments in oneshot second harmonic generation, widefield twophoton microscopy, and parallel micromachining are shown to study the quality of the compensation performed with the DCM.

Rigorous Diffraction Theory for 360?? ComputerGenerated Holograms
Most algorithms for a computergenerated hologram using FFT are effective only under the condition that both the input and observation surfaces are finite planes that are parallel to each other. To synthesize a 360 degree hologram in a computer, a numerical simulation of the diffraction on the non planar observation surfaces is required. At first, we propose a simple but rigorous equation which describes the relation between the diffracted wavefront of a 3D object and its 3D Fourier spectrum. In this method, an exact solution of the diffraction integral is given by the Green function. This principle gives us an intuitive understanding of calculation processes for various diffraction situation. Alternatively, fast computation solutions for spherical computer generated hologram employing PSF (convolution method) is proposed. We start with Helmholtz equation, with considering a boundary value problem in spherical coordinates. The solution define the transfer function and the spectral decomposition of the wave field in the spherical surface. Using the transfer function and the wave spectrum we can develop a spectral propagation formula (for spherical surfaces in spherical coordinates) analogous to the angular spectrum formula. Some computer simulation and experimental results are presented.

Electromagnetic Boundary Value Problems
This chapter contains sections titled: Introduction SLP1 Extension to Three Dimensions SLP1 in Two Dimensions SLP2 and SLP3 Extension to Three Dimensions The Parallel Plate Waveguide Iris in Parallel Plate Waveguide Aperture Diffraction Scattering by a Perfectly Conducting Cylinder Perfectly Conducting Circular Cylinder Dyadic Green's Functions This chapter contains sections titled: Problems References

Bistatic Scattering at a FiniteLength Cylinder
The shadow radiation is the constituent part of the physical optics (PO) field. It was noted there that this field concentrates in the vicinity of the shadow region. This chapter verifies this property by numerical investigation of the shadow radiation generated by the finitelength cylinder. The most appropriate procedure for doing this work would be the direct application of the shadow contour theorem. It presents numerical investigation of the scattered field. The chapter considers its physical structure and presents simple highfrequency asymptotics for the directivity pattern. It deals with the EPolarization and the HPolarization. Finally, the chapter discusses about the PO shootingthrough rays and their cancellation by Fringe rays, and the refined asymptotics for the specular beam reflected from the lateral surface.

This chapter contains sections titled: Plane Wave Incident on a Plane Boundary Propagation Through a Layered Medium The Sommerfeld Dipole Problem Multilayered Structures Periodic Structures Field Penetration Through Apertures Edge Diffraction

No Abstract.

This chapter gives an overview of the basic physical processes determining the propagation of wireless signals. We start out with freespace propagation, reviewing the concepts of effective antenna area, freespace pathloss, and Friis' law. We then turn to the reflection from, and transmission into, dielectric or conducting materials: SnellÂ¿s law gives the appropriate transmission and reflection coefficients for different polarizations, namely TE and TM waves. From insights gathered here, we then compute the pathloss law that holds when both lineofsight and ground reflection is present. We next turn to the process of wave diffraction, first describing the diffraction by a single screen that can be quantified in terms of the Fresnel integral, and interpreted by means of Fresnel zones. We then describe different approximation methods for computing the diffraction by multiple screens: Bullington method, Deygout method, and EpsteinPetersen method. We next turn to the diffuse scattering of radiation on rough surfaces, which can be described by the Kirchhoff method or the (more accurate, but also more complicated) perturbation method. A discussion of waveguiding in corridors and street canyons concludes the chapter.
Jobs related to Diffraction
Back to Top
Computational Electromagnetic Researcher
U. S. Naval Research Laboratory

Senior Research Scientist and Deputy Director
Stony Brook University