Diffraction

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a screen by diffraction from a square aperture]] Diffraction refers to various phenomena which occur when a wave encounters an obstacle. Italian scientist Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1665. (Wikipedia.org)






Conferences related to Diffraction

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2016 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.

  • 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

    The joint meeting is intended to provide an international forum for the exchange of information on state of-the-art research in the areas of antennas, propagation, electromagnetic engineering, and radio science.

  • 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

    The joint meeting is intended to provide an international forum for the exchange of information on state of-the-art research in the areas of antennas, propagation, electromagnetic engineering, and radio science. Technical sessions will be held over a four-day period and workshops and short courses will occur on two days.

  • 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

    The Symposium serves as the premier international forum for the exchange of information on state-of-the-art research in antennas, electromagnetic- wave propagation, radio science, and electromagnetic engineering.

  • 2012 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting

    This conference covers all areas relating to antenna theory, design and practice: propagation, including theory, effects and system considerations; analytical and computational electromagnetics, scattering, diffraction, and radar cross sections; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, millimeter and submillimeter wave techniques, telecommunications, broadcasting, electromagnetic effects on biological tissue.

  • 2011 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting

    This meeting is intended to provide an international forum for the exchange of information on state-of-the-art research in antennas, propagation, and electromagnetic engineering.

  • 2010 IEEE International Symposium Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting

    This is the premier annual conference on Antennas and Propagation, electromagnetics and radio science.

  • 2009 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting

    This joint meeting is co-sponsored by the IEEE Antennas and Propagation Society (AP-S) and USNC-URSI Commissions A, B, C, D, E, F and K. Technical sessions (June 1-5), workshops and short courses (May 31 & June 6) are offered to provide a comprehensive and well balanced program. This meeting provides an international forum for the exchange of information on state-of-the-art research in antennas, propagation, and electromagnetic engineering.

  • 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting

    This meeting is intended to provide an international forum for the exchange of information on state-of-the-art research in antennas, propagation, and electromagnetic engineering.


2013 13th Mediterranean Microwave Symposium (MMS)

2013 MMS will include distinguished keynote speakers, parallel oral presentations and poster sessions. Topics cover state-of-the art as well as current progress and recent developments in several emerging topics related to RF, microwave engineering and applications.

  • 2011 Mediterranean Microwave Symposium (MMS)

    MMS 2011 will provide an international forum for reporting progress and recent developments in RF and microwave and in many other related topics theory and applications . MMS'2011 will consist of technical and invited sessions and keynote and tutorial sessions covering the state-of-the art of several hot topics in RF and microwave engineering and technology.

  • 2010 10th Mediterranean Microwave Symposium (MMS)

    MMS2010 will provide an international forum for reporting progress and recent developments in RF and microwave theory and applications. Suggested topics are listed below, but consideration will be given to papers on other subjects.

  • 2009 Mediterranean Microwave Symposium (MMS)

    MMS 2005 will provide an international forum for reporting progress and recent developments in RF and microwave theory and applications. Suggested topics are listed below, but consideration will be given to papers on other subjects. Suggested Topics : 1. Propagation, Scattering and diffraction 2. Microwave and Millimeter-Wave Circuits. 3. Photonics, non linear optics and devices 4. Microwaves and millimeterwave devices CAD 5. RF and Wireless Technology and Applications 6. Interconnects 7. W


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, Non-stationary phenomena

  • Days on Diffraction 2012 (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, Non-stationary phenomena.

  • Days on Diffraction 2011 (DD)

    Mathematical aspects of wave propagation Scattering and diffraction Sound propagation and vibration Nonlinear waves Inverse problems Non-stationary phenomena Asymptotic techniques Electromagnetics Elastic waves and seismology Microwave and quantum waveguides Numerical approaches Wavelets and applications

  • Days on Diffraction 2010 (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, Non-stationary phenomena, Wavelets and applications

  • Days on Diffraction 2009 (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, Non-stationary phenomena, Wavelets and applications

  • Days on Diffraction 2008 (DD)

    The aim of the event is to bring together scientists working in the area of mathematical theory of waves' diffraction and propagation and researchers interested in application of various nature wave phenomena.

  • Days on Diffraction 2007

  • Days on Diffraction 2006

  • Days on Diffraction 2005

  • Days on Diffraction 2004

  • Days on Diffraction 2003

  • Days on Diffraction 2002

  • Days on Diffraction 2001

  • Days on Diffraction 2000

  • Days on Diffraction '99


2010 URSI International Symposium on Electromagnetic Theory (EMTS 2010)

all aspects of electromagnetic theory and its applications



Periodicals related to Diffraction

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Antennas 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 guided-wave science, technology, and engineering in the areas of fiber and cable technologies; active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; systems and subsystems; new applications; and unique field trials.



Most published Xplore authors for Diffraction

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Xplore Articles related to Diffraction

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The properties of beams transmitting through the convex lens

Hongfu Meng; Long Wang; Teng Li; Wenbin Dou; Bo Xiang; Yanzhong Yu 2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016

The transmission properties of the light through the glass convex lens can be analyzed by classical theory. In quasi-optical technology, the Gaussian beam transmitting through the dielectric convex lens can be analyzed by the paraxial theory. The lens can convert a divergent Gaussian beam into convergent and the beam waist radius of the output beam can be determined by the ...


Realization of transmit and receive focusing with limited-diffraction beam using linear transducer in B-mode ultrasound imaging system

Mok-Kun Jeong; Moo-Ho Bae; Seong-Ho Chang 1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102), 1998

The transmit pulse waveforms of a limited-diffraction beam in a linear array transducer should be varied depending on the transducer element location, the realization of which requires complicated hardware. In order to overcome this disadvantage while achieving the same field response, we propose a method of synthesizing limited-diffraction beams by the combined signal processing of plane waves that propagate in ...


Stationary phase method application for the analysis of radiation of complex 3-D conducting structures

O. M. Conde; J. Perez; M. P. Catedra IEEE Transactions on Antennas and Propagation, 2001

The stationary phase method is used to calculate the radiation pattern of antennas on complex structures. Physical optics (PO) approximation has been applied for the induced currents. The problem is stated directly over the parametric surfaces used to model the geometry and no translation of geometrical formats is required. The integral comes from the contribution of certain points on the ...


Comment on "Propagation and Negative Refraction" [Backscatter]

George V. Eleftheriades; Andrea Alu IEEE Microwave Magazine, 2013

Hunter et al. in the above-named article (ibid., vol. 13, no. 5, pp. 58-65, July/Aug. 2012) have recently presented a confusing interpretation of the phenomenon of negative refraction in metamaterials. In the first part of their article, the authors make bold and general claims that negative refraction is not possible at a single interface due to causality issues. They attempt ...


Magnetic and magneto-transport properties of metastable Gd<sub>x </sub>Nb<sub>1-x</sub> alloys

R. L. Sommer; J. Q. Xiao; C. L. Chien IEEE Transactions on Magnetics, 1998

Metastable GdxNb1-x alloys over the entire composition range have been realized by co-deposition at room temperature. Structural and magnetic phase diagrams have been determined. The alloys are crystalline bcc (0.00&les;x&les;0.40), amorphous (0.40&les;x&les;0.70), and crystalline hcp (0.70&les;x&les;1.00). Magnetic and magneto-transport measurements show spin glass ordering for x&les;0.60, and ferromagnetic ordering with a weak spin glass transition for x>0.60


More Xplore Articles

Educational Resources on Diffraction

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eLearning

The properties of beams transmitting through the convex lens

Hongfu Meng; Long Wang; Teng Li; Wenbin Dou; Bo Xiang; Yanzhong Yu 2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016

The transmission properties of the light through the glass convex lens can be analyzed by classical theory. In quasi-optical technology, the Gaussian beam transmitting through the dielectric convex lens can be analyzed by the paraxial theory. The lens can convert a divergent Gaussian beam into convergent and the beam waist radius of the output beam can be determined by the ...


Realization of transmit and receive focusing with limited-diffraction beam using linear transducer in B-mode ultrasound imaging system

Mok-Kun Jeong; Moo-Ho Bae; Seong-Ho Chang 1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102), 1998

The transmit pulse waveforms of a limited-diffraction beam in a linear array transducer should be varied depending on the transducer element location, the realization of which requires complicated hardware. In order to overcome this disadvantage while achieving the same field response, we propose a method of synthesizing limited-diffraction beams by the combined signal processing of plane waves that propagate in ...


Stationary phase method application for the analysis of radiation of complex 3-D conducting structures

O. M. Conde; J. Perez; M. P. Catedra IEEE Transactions on Antennas and Propagation, 2001

The stationary phase method is used to calculate the radiation pattern of antennas on complex structures. Physical optics (PO) approximation has been applied for the induced currents. The problem is stated directly over the parametric surfaces used to model the geometry and no translation of geometrical formats is required. The integral comes from the contribution of certain points on the ...


Comment on "Propagation and Negative Refraction" [Backscatter]

George V. Eleftheriades; Andrea Alu IEEE Microwave Magazine, 2013

Hunter et al. in the above-named article (ibid., vol. 13, no. 5, pp. 58-65, July/Aug. 2012) have recently presented a confusing interpretation of the phenomenon of negative refraction in metamaterials. In the first part of their article, the authors make bold and general claims that negative refraction is not possible at a single interface due to causality issues. They attempt ...


Magnetic and magneto-transport properties of metastable Gd<sub>x </sub>Nb<sub>1-x</sub> alloys

R. L. Sommer; J. Q. Xiao; C. L. Chien IEEE Transactions on Magnetics, 1998

Metastable GdxNb1-x alloys over the entire composition range have been realized by co-deposition at room temperature. Structural and magnetic phase diagrams have been determined. The alloys are crystalline bcc (0.00&les;x&les;0.40), amorphous (0.40&les;x&les;0.70), and crystalline hcp (0.70&les;x&les;1.00). Magnetic and magneto-transport measurements show spin glass ordering for x&les;0.60, and ferromagnetic ordering with a weak spin glass transition for x>0.60


More eLearning Resources

IEEE-USA E-Books

  • Characterization Techniques for Film Characteristics

    This chapter shows data regarding whisker phenomena that are characterized by the most recent transmission electron microscopy (TEM), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD) techniques. It introduces several examples of SEM image use in tin whisker analysis: observation of tin whisker shape, measurement of tin whisker length and kink angle, and confirmation that tin whiskers do indeed generate from the base metal. The chapter describes concrete examples of whisker analysis that use the techniques. The chapter also discusses general crystal orientation characterization techniques and then focuses on the principles of and advances in EBSD and its use in investigating the effects of crystal orientation on tin whisker formation. Many examples of characterization by using TEM, SEM, and EBSD techniques for tin and tin???based alloy finishes show how to clarify the essential characteristics of the films so that the authors can deepen their understanding of whisker formation mechanisms.

  • Radiation Structures and Numerical Methods

    The chapter discusses analytical techniques for antennas and explains their appropriate use. Starting with radiation from electric and magnetic currents and the related Greens functions, they are combined into Huygens sources of geometric optics (GO). Physical optics (PO) combines boundary conditions with Green's functions. The reaction theorem leads to moment methods using approximate currents instead of the iterative PO. Finite difference time domain (FDTD) solves Maxwell's equations in the time domain. Geometric theory of diffraction (GTD) adds the scattering from edges and curved surfaces to extend GO to finite frequencies.

  • 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 X-Ray 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

  • F. Diffraction by Plane Conducting Screens: Babinet&#39;s Principle

    First published in 1981, Robert S. Elliott's Antenna Theory and Design is one of the most significant works in electromagnetic theory and applications. In its broad-ranging, analytic treatment, replete with supporting experimental evidence, Antenna Theory and Design conveys fundamental methods of analysis that can be used to predict the electromagnetic behavior of nearly everything that radiates. After more than two decades, it remains a key resource for students, professors, researchers, and engineers who require a comprehensive, in-depth treatment of the subject. In response to requests from many of our members, IEEE is now reissuing this classic. Newly revised, it once again will be an invaluable textbook and an enduring reference for practicing engineers. The IEEE Press Series on Electromagnetic Wave Theory offers outstanding coverage of the field. It consists of new titles of contemporary interest as well as reissues and revisions of recognized classics by established authors and researchers. The series emphasizes works of long-term archival significance in electromagnetic waves and applications. Designed specifically for graduate students, researchers, and practicing engineers, the series provides affordable volumes that explore and explain electromagnetic waves beyond the undergraduate level.

  • Propagation

    This chapter contains sections titled: Free Space Propagation Ground-Wave Propagation over Plane Earth Propagation over a Perfectly Conducting Plane Attenuation of Electromagnetic Fields by Buildings Edge Diffraction Rayleigh Roughness Criterion This chapter contains sections titled: References

  • References

    No Abstract.

  • Geometric Theory of Diffraction

    This chapter contains sections titled: Numerical solution of ordinary differential equations Canonical problems Leaky rays

  • Index

    **Discusses the growth mechanisms of tin whiskers and the effective mitigation strategies necessary to reduce whisker growth risks** This book covers key tin whisker topics, ranging from fundamental science to practical mitigation strategies. The text begins with a review of the characteristic properties of local microstructures around whisker and hillock grains to identify why these particular grains and locations become predisposed to forming whiskers and hillocks. The book discusses the basic properties of tin-based alloy finishes and the effects of various alloying elements on whisker formation, with a focus on potential mechanisms for whisker suppression or enhancement for each element. Tin whisker risk mitigation strategies for each tier of the supply chain for high reliability electronic systems are also described. * Discusses whisker formation factors including surface grain geometry, crystallographic orientation-dependent surface grain boundary structu e, and the localization of elastic strain/strain energy density distribution * Examines how whiskers and hillocks evolve in time through real-time studies of whisker growth with the scanning electron microscope/focused ion beaming milling (SEM/FIB) * Covers characterization methods of tin and tin-based alloy finishes such as transmission electron microscopy (TEM), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD) * Reviews theories of mechanically-induced tin whiskers with case studies using pure tin and other lead-free finishes shown to evaluate the pressure-induced tin whiskers _Mitigating Tin Whisker Risks: Theory and Practice _is intended for the broader electronic packaging and manufacturing community including: manufacturing engineers, packaging development engineers, as well as engineers and researchers in high reliability industries.

  • Introduction

    No abstract.

  • Hybrid Methods

    Numerical methods for the computation of scattering problems can be grouped roughly into two categories: high-frequency asymptotic method, and full-wave numerical method. The physical optics method (PO), geometrical optics method (GO), geometrical theory of diffraction (GTD), physical theory of diffraction (PTD), and the shooting and bouncing ray method (SBR) are all examples of the former group. MoM, FEM and FDTD are the most popular examples of the latter group. These methods are all capable of independently solving EM problems of a particular range. However, these methods are distinct in terms of numerical performance. Each method has its own advantages and disadvantages. We usually are able to construct problem-tailored solution scheme by combining the advantage of different numerical methods, which provides both accurate and efficient result. Generally speaking, in CEM, two types of ideas exist in the hybridization. In the first type, the computational domain is decomposed into different regions and different schemes are applied to each region. The hybrid finite-element boundary-integral (FE-BI) is one of the examples. In the second type, the dimension in the EM problem is separated and we apply a different method for each dimension according to mode theory or variable separation theory. In this chapter, we present the scheme combining high-frequency asymptotic method and full-wave method in the first section, and the hybrid full-wave methods in the second one.



Standards related to Diffraction

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