4nec2 5.7.4 Description:

4nec2 is a Windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler.

When running frequency sweeps, linear or logarithmic style SWR, Gain, F/B-ratio and impedance line-charts are produced. With the included Optimizer and Sweeper one is able to optimize antenna- and/or other environment-variables for Gain, resonance, SWR, efficiency and/or F/B, F/R-ratio. With the sweeper one is able to graphically display the effect of changing one or more of these variables for a specified range of values/frequencies.

For the starting modeler a graphically based 3D geometry-editor is included which requires no additional NEC knowledge while still enabling you to create and visualize and compare current-distribution, far/near-field patterns and Gain/SWR charts. More experienced modelers can use the gradient style and/or the genetic algorithm based optimizers to improve their designs.

To list some of its features or see some screenshots, click the appropriate links below on the left. To download and try the software click upmost two links below on the right (setup.exe) or the third link for a single zip containing all separate files.

4nec2 5.7.4 Features:

· Graphical 2D and 3D visualization of Far- and Near-field data and Geometry strutures (including circular polarization view).
· Line-chart visualization for freq-sweep Gain, F/B, F/R, SWR and impedance data.
· Drag and drop style Geometry Editor to assist the starting antenne modeller.
· Full Nec2 and Nec4 command support, including GX, GM, GR, GA, GH and surface patches.
· Capable of running up to 11000 wires and/or segments (limited by the max of 2Gb of windows on-board memory)
· Support for inclusion of surface-wave component in far-field data.
· 3D geometry display for surface patches included.
· Variable substitution included for complete Nec2/4 command set enabling you to model by equation.
· Sophisticated real-time 3D geometry and pattern viewer showing real wire-radius.
· AO-style gradient/hill-climbing optimizer included.
· Genetic Algorithms based optimizer included.
· Automatic variable sweeper with line-chart output.
· Automatic convergence tester with line-chart output.
· Interactive Smith chart visualization for freq-sweeps.
· Integrated Sommerfeld ground calculations with frequency-sweep.
· Automatic generation of VOACAP propagation prediction type 13 and -14 antenna files.
· Automatic coversion of AO (*.ant)and EZnec (*.ez)input files.
· Insulated-Wire' and 'LC-trap' loading-types included.
· Automatic conversion for feet, inch, #awg to meters and elevation/azimuth to phi/theta and reverse.
· Batch processing for automatic testing, calculation and/or conversion of multiple Nec, AO and/or EZnec input-files.
· Extensive segment- en geometry validation, such as: Intersecting volumes, Short/thick wires at sharp angle, Unequal segmentation for parallel wires, Too low hight, Large radius or length changes at junctions, etc.
· Screen grabber for easy cut/paste, print or save parts of the screen, window or form.
· Geometry builder to create cylindric, patch, plane, box, helix and parabola shaped structures using auto-segmentation and/or equal-area rules.
· Automatic generation of Stub-, L-, Pi- and Tee-matching-networks (low- and high-pass)
· Visualization of circular polarization components E(left) and E(right) for far-field.
· EZnec style MiniNec ground included.
· Capable of running the default Lawrence Livermore National Laboratories Nec4 engine.
· Running on all systems from early Windows-95 to latest Windows-Vista
· More than 450 example files
· Context sensitive Help-file.

Related searches:

4nec2 - antenna

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