Search Results for "periodic method of moments"
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Showing 13 open source projects for "periodic method of moments"
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Computational electromagnetics software. Uses surface Method of Moments, enhanced by using the Multilevel Fast Multipole Method. Code is parallelized and runs on laptops, desktops and clusters. The code precision is adjustable, it is fast and uses little memory. CFIE is used for closed surfaces, and EFIE for open PEC surfaces. Can function on GMSH, GiD and ANSYS meshes.
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DIANNA
software for DFA method
DIANNA (Diffraction Analysis of Nanopowders) is a free software developed to simulate atomic models of structures from an ensemble of nanoparticles and to calculate their whole X-ray powder diffraction patterns and the radial distribution function. The main objects of investigation are the particles whose coherent scattering domains do not exceed several nm. DIANNA is based on the ab initio method using the Debye scattering equation. This method makes it possible to obtain information... -
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F3DM
Finite Element Method on 3D Meshes
f3dmlib is a FEM library that can read, write and analyse 3D tetrahedral meshes, minimize a given functional, and refine the resulting meshes. The minimization is parallelized with OpenMP. Three main features in unstable 1.8.x version (available via GIT): quadratic elements, periodic boundary conditions, and the solver for scalar and electromagnetic wave equations. f3dmgeom is a collection of a few simple tools for creating surface meshes for tetgen. It can handle simple geometries only. -
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Luban
Image compression with efficiency very close to WeChat
..., the app giant manages this task in action. To gather data, 100 images with different resolutions were sent through WeChat Moments, then the compressed images were compared with the original ones. Luban's foundation is the result of this analysis on WeChat's compression method. Because the process was analyzed backward, Luban's efficacy is not yet exactly the same as that of WeChat, but the results are already very close to what WeChat Moments' image compression produces. -
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finds exact gain, directivity and input impedance of Yagi or log-periodic antennas (planar symmetric array of cylindrical dipoles, many driven elements) for a range of specified frequencies, integrates 2D for segments on the same element, moment method
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IgbemSopt
A framework of shape optimisation based on the isogeometric BEM
This is an implementation of shape optimisation solver based on the isogeometric boundary element method (IGBEM). The details are described in a paper "A framework of shape optimisation based on the isogeometric boundary element method toward designing thin-silicon phtovoltaic devices" submitted to the journal "Engieering with Computers". -
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wavelib
C Implementation of Wavelet Transform (DWT,SWT and MODWT)
Methods Implemented DWT/IDWT A decimated Discrete Wavelet Transform implementation using implicit signal extension and up/downsampling so it is a fast implementation. A FFT based implementation is optional but will not be usually needed. Both periodic and symmetric options are available. SWT/ISWT Stationary Wavelet Transform. It works only for signal lengths that are multiples of 2^J where J is the number of decomposition levels. For signals of other lengths see MODWT implementation... -
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DS-Frame2D
2D Frame Analysis, Linear Static Analysis, Mode Shapes
This is a free program for solving linear 2D framed structures under static loading and calculating the mode shapes. It is coupled with an easy-to-use GUI that provides the possibility to design the structure very fast. It calculates reaction forces, diagrams of axial and shear forces, as well as, diagrams of bending moments. Moreover, it calculates the mode shapes of the structure using various methods and it will be cabable of performing dynamic analysis soon. The program is written... -
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OpenNEC is an open-source program based on the NEC2 core. NEC2 is a method-of-moments simulation and analysis tool for antennas and conductive structures such as metal towers. The current goal of the project is to recode the NEC2 core from ForTran into Octave and Matlab for cross platform use as a simulation and analysis tool with the powerful graphics and mathematical capabilities of those programs.
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AVR beacon
A hamradio beacon project on an AVR MCU
AVR beacon project utilizes a new approach to RF signal generation using SQDDS method (making RF signals directly from the software, based on a pre-calculated periodic bit-sequence). It is mainly used by the hamradio operators to set up various radio beacons for different purposes, mostly for radio waves propagation discoveries. CW (continious waves, Morze code) is a main modulation mode. Other modes like PSK and FSK are planned to implement in the future releases. User can enter any ASCII... -
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Library to evaluate periodic Green's functions or Green's functions for wave guides for the Helmholtz equation using Ewald's method.
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An electromagnetic field simulator using Method of Moments (MoM). It has a MFC/OpenGL-based GUI and can simulate and visualize scattering and radiation problems in homogeneous and multilayered media.
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