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Antenna Modeling by Mind Map: Antenna Modeling
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Antenna Modeling

Transmission Lines

Would you put transmission lines as it's own node or as a sub-node of Geometry?

Modeled

Mathematical

Stubs

1/2 wave

1/4 wave

Front end software

EZNEC

Commercial

Demo Available

Windows

NEC2 Engine

MMANA

Free Version Available

Windows

MiniNEC based

GAL-ANA

Commercial Version of MMANA

Uses MiniNEC & NEC2 engines

4NEC2

Free

Windows

NEC4WIN

Free

Windows

Antenna Model

Commercial

Windows

MiniNEC Engine

NECWin

Commercial

Windows

NEC2 Engine

CocoaNEC

Macintosh

Free

NEC

Source Code, Compile it yourself

Binaries available

No Graphical Interface

Old Fashioned 80-col card input

Line Printer Output

NEC2, Free

NEC4, Licensed, Export Restrictions

Geometry

Elements

Wires

Segments

Coordinates

Cartesian

X-Y-Z coordinates

Measured linearly from the origin

Polar

Dimensions

2D

3D

Engines

NEC

NEC2, free, available for download, source, binary, Linux, Windows, Macintosh

NEC4, Licensed, Lawrence Livermore National Laboratories, Can handle special cases

Limitations

Known Problems

Originally written in FORTRAN

MiniNEC

Method of Moments Computation

Limitations

Known problems, resonant freqs may be slightly in area, converges more slowly when wires meet at an angle, weaker ground model, coverges more slowly when wires of signifcantly different length are parallel

Originally written in BASIC

Method of Moments

Sources

Voltage

Current

Split