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Antennas Research Group / Democritus University of Thrace
VEMSA3D
A floss Visual ElectroMagneticsSimulator for 3D Antennas
33rd TSP 2010
Christos Koutsos, Nikolitsa Yannopoulou and Petros Zimourtopoulos
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VEMSA3D - Ancestors : 1/2
ThinWire 1980
RichWire 1990
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VEMSA3D - Ancestors : 2/2
WWW Virtual Reality 1995
RadPat4w 2000
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VEMSA3D - The Starting Window
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VEMSA3D - Menus and Dialog Boxes
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VEMSA3D - Simulation Results : 1/2
Industrial StandardThe Half-wave Dipole : 9 modes
2D and 3D E - U Radiation Patterns
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VEMSA3D - Simulation Results : 2/2
Commercial Antenna
HUF TV : 723 modes
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VEMSA3D - Comparison - Simulation Results with Measurements : 1/4
Experimental AntennaArray of 2 dipoles : 73 modes
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VEMSA3D - Comparison - Simulation Results with Measurements : 2/4
Amateur Antenna"Hentenna" : 109 modes
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VEMSA3D - Comparison - Simulation Results with Measurements : 3/4
Experimental AntennaMonopole over a counterpoise : 167 modes
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VEMSA3D - Comparison - Simulation Results with Measurements : 4/4
Experimental AntennaA Monopole over a Counterpoise over a Wired-Disk : 2,594 modes
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VEMSA3D - Comparison with Freeware 4NEC2X : 1/2
Antenna on Airplane
VEMSA3D : 391 modes
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VEMSA3D - Comparison with Freeware 4NEC2X : 2/2
Horn with Bow-Tie feeder, by Pittra and Raida, 20101,370 modes from 1,206 segments =< 1,500 max segments of 4NEC2X
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VEMSA3D : Improvements
Old Version 1.0
- - - - - - - - - - - - - - - - - - - - - - New version 1.1 - - - - - - - - - - - - - - - - - - - - - - -
Short Cross Antenna
Total Pattern Theta-Pattern Phi-Pattern
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VEMSA3D - Unique Characteristics : 1/3
VEMSA3D is developed in C++ as /F/L/O/S/S/
Free Libre Open Source Software
Backend RichWire Public Domain
GUI GNU GPL
Graphics Free
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VEMSA3D - Unique Characteristics : 2/3
Horn with Bow-Tie feeder, by Pitra and Raida, 20103,266 points - 4,362 segments 5,458 modes
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VEMSA3D - Unique Characteristics : 3/3
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VEMSA3D - Main Conclusions
VEMSA3D
- is only limited by computing resourves and time,
- is Free Libre Open Source Software Code for everybody,
- is expandable by anyone,
- surpasses any restriction imposed by any authority on modeling points, segments or modes of any other Visual Electromagnetics Antenna Simulator, either freeware or commercialware.
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33rd TSP 2010
VEMSA3DSource Code, Updated Material
www.antennas.gr/floss
code.google.com/p/rga/
Thank you for your attention
Antennas Research Group, Palaia Morsini, Xanthi, Thrace, Hellas, EU