Zobrazeno 1 - 10
of 883
pro vyhledávání: '"T. Weiland"'
Transparent boundary condition for the calculation of eigenmodes in transversely infinite waveguides
Publikováno v:
Advances in Radio Science, Vol 18, Pp 7-16 (2020)
Waveguides play one of the key figures in today's electronics and optics for signal transmission. Corresponding simulations of electromagnetic wave transportation along these waveguides are accomplished by discretization methods such as the Finite In
Externí odkaz:
https://doaj.org/article/aed28bcf951e4eaa810718be3cbe1cb2
Publikováno v:
Advances in Radio Science, Vol 12, Pp 29-34 (2014)
The electrical transport in zinc oxide (ZnO) varistors is analyzed using microstructural material modeling. The fully three dimensional current distribution is computed by means of a nonlinear equivalent circuit model representing the assembly of cur
Externí odkaz:
https://doaj.org/article/3374e7993bc84f8eb31b261c4b2dbcab
Publikováno v:
Advances in Radio Science, Vol 11, Pp 23-29 (2013)
In this paper we address a fast approach for an accurate eigenfrequency extraction, taken into consideration the evaluated electric field computations in time domain of a superconducting resonant structure. Upon excitation of the cavity, the electric
Externí odkaz:
https://doaj.org/article/cc5fd430d28345cd8bcbcb504ebbea26
Publikováno v:
Advances in Radio Science, Vol 11, Pp 347-352 (2013)
In the last two decades, the increasing number of electronic devices used in day-to-day life led to a growing interest in the study of the electromagnetic field interaction with biological tissues. The design of medical devices and wireless communica
Externí odkaz:
https://doaj.org/article/1a16bd37b6d54e0385a8481a9bb065a9
Publikováno v:
Advances in Radio Science, Vol 9, Pp 99-105 (2011)
With the development of medical technique and computational electromagnetics, high resolution anatomic human models have already been widely developed and used in computation of electromagnetic fields induced in human body. Although these so called v
Externí odkaz:
https://doaj.org/article/221a3cfd252c41189585406173c35fa0
Publikováno v:
Advances in Radio Science, Vol 9, Pp 39-44 (2011)
Electric field singularities at sharp metallic edges or at a dielectric contact line can be described analytically by asymptotic expressions. The a priori known form of the field distribution in the vicinity of these edges can be used to construct nu
Externí odkaz:
https://doaj.org/article/183880491d5242bdbbaa64ab58205a47
Publikováno v:
Advances in Radio Science, Vol 6, Pp 77-82 (2008)
In order to characterize three-dimensional, left-handed metamaterials (LHM) we use electromagnetic field simulations of unit cells. For waves traveling in one of the main directions of the periodic LHM-arrays, the analysis is concentrated on the calc
Externí odkaz:
https://doaj.org/article/8a0205d192364dd4b0ac67c6088b7154
Publikováno v:
Advances in Radio Science, Vol 1, Pp 81-86 (2003)
In magneto- and electroquasi-static time domain simulations with implicit time stepping schemes the iterative solvers applied to the large sparse (non-)linear systems of equations are observed to converge faster if more accurate start solutions are a
Externí odkaz:
https://doaj.org/article/5f89160be02b489ca5a49950f760118b
Autor:
R. Schuhmann, T. Weiland
Publikováno v:
Advances in Radio Science, Vol 1, Pp 93-97 (2003)
Time domain simulations for high-frequency applications are widely dominated by the leapfrog timeintegration scheme. Especially in combination with the spatial discretization approach of the Finite Integration Technique (FIT) it leads to a highly eff
Externí odkaz:
https://doaj.org/article/5c6dd7717ed142e38f3799c6f9506533
Autor:
R. Singh, O. Boine-Frankenheim, O. Chorniy, P. Forck, R. Haseitl, W. Kaufmann, P. Kowina, K. Lang, T. Weiland
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 3, p 034201 (2013)
Two different tune measurement systems have been installed in the GSI Helmholtzzentrum für Schwerionenforschung heavy-ion synchrotron SIS-18. Tune spectra are obtained with high accuracy using these fast and sensitive systems. Besides the machine tu
Externí odkaz:
https://doaj.org/article/4bace4825c5d47f5a818267a9190100d