Antennas Research Group / Democritus University of Thrace
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Transcript of Antennas Research Group / Democritus University of Thrace
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
2/17
VEMSA3D - Ancestors : 1/2
ThinWire 1980
RichWire 1990
3/17
VEMSA3D - Ancestors : 2/2
WWW Virtual Reality 1995
RadPat4w 2000
4/17
VEMSA3D - The Starting Window
5/17
VEMSA3D - Menus and Dialog Boxes
6/17
VEMSA3D - Simulation Results : 1/2
Industrial StandardThe Half-wave Dipole : 9 modes
2D and 3D E - U Radiation Patterns
7/17
VEMSA3D - Simulation Results : 2/2
Commercial Antenna
HUF TV : 723 modes
8/17
VEMSA3D - Comparison - Simulation Results with Measurements : 1/4
Experimental AntennaArray of 2 dipoles : 73 modes
9/17
VEMSA3D - Comparison - Simulation Results with Measurements : 2/4
Amateur Antenna"Hentenna" : 109 modes
10/17
VEMSA3D - Comparison - Simulation Results with Measurements : 3/4
Experimental AntennaMonopole over a counterpoise : 167 modes
11/17
VEMSA3D - Comparison - Simulation Results with Measurements : 4/4
Experimental AntennaA Monopole over a Counterpoise over a Wired-Disk : 2,594 modes
12/17
VEMSA3D - Comparison with Freeware 4NEC2X : 1/2
Antenna on Airplane
VEMSA3D : 391 modes
13/17
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
14/17
VEMSA3D : Improvements
Old Version 1.0
- - - - - - - - - - - - - - - - - - - - - - New version 1.1 - - - - - - - - - - - - - - - - - - - - - - -
Short Cross Antenna
Total Pattern Theta-Pattern Phi-Pattern
15/17
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
16/17
VEMSA3D - Unique Characteristics : 2/3
Horn with Bow-Tie feeder, by Pitra and Raida, 20103,266 points - 4,362 segments 5,458 modes
17/17
VEMSA3D - Unique Characteristics : 3/3
18/17
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.
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