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Antenna Modeling Software for the MAC

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I like using MAC computers because of the inherent stability of the underlying UNIX operating system, and the immunity to most viruses. One disadvantage, however, is that not all types of programs are written for the MAC. I occasionally have need for an antenna modeling program. On my windows PC, I used EZNEC (http://www.eznec.com) which costs about $100.

I have always wished to have a similar program for the MAC. I have now found an even better program than EZNEC, that is written specifically for the MAC. The program is “cocoaNEC” (http://www.w7ay.net/site/Applications/cocoaNEC/) written by Kok Chen a retired Apple software engineer. The program will run on OS X 10.6 or later, I have been running mine on the latest MAC operating system OS X 10.10, Yosemite, with no problems. This elegant and fast running program is written in OS X’s native programming language. This program takes advantage of all the cores of a modern Intel processor, therefore, it runs fast. The best part, however, is that the program is free.

  1. OpenSCAD - The Programmers Solid 3D CAD Modeller OpenSCAD is software for creating solid 3D CAD objects. It is free software and available for Linux/UNIX, MS Windows and Mac OS X.
  2. Model Train Graphics. This is another type of model railroad software that you will almost certainly find useful for your train layout not so much for planning purposes, but more for creation of signs, decals, old classic advertisements for your buildings or billboards, simulation of brick or stone walls, stained glass, window treatments, wallpaper, etc.
  3. 3D software allows you to create both models and wire-frames but it’s more expensive than 2D software and can run into thousands of dollars on Mac. Note that most professional 3D CAD software such as AutoCAD and ArchiCAD have now been updated to include support for 3D printers.

3D modeling takes a lot of practice, but anyone can learn it. Check out the top 10 free and easy 3D modeling software tools for beginners in 2020. The Ranking: 3D Modeling Software for Mac Users The two most used 3D modeling software programs for Macintosh devices are freeware program Blender (score: 80) and freemium software SketchUp (75). Blender is known for its enormous design freedom and its endless number of tools and functions – however, it’s also known for its steep learning.

The downloaded program includes a reference manual and tutorial. Example antenna files can also be downloaded from Kok’s webpage. “cocoaNEC” uses the NEC-2 computational engine. NEC (Numerical Electromagnics Code) was developed by Lawrence Livermore Laboratories in 1981 to simulate the electromagnetic response of antennas and other metal structures.

The antenna characteristics can be input in either one of two ways, via a tabular spreadsheet interface or a special NC programing language interface. The spreadsheet approach is simpler, however, the NC programing interface is more powerful. The antenna’s input information consists of its geometry (for a conductor, the x, y, z coordinates of its endpoints), its excitation, and type of ground (if any).

The summary output for a three-element Yagi antenna located 10-meters above the ground is shown below.

The different color lines represent different frequencies. The antenna can be modeled in free space or above a conducting ground, and the ground conductivity can be varied.

Other outputs consist of a 3-dimensional radiation pattern, driving point impedance and VSWR, as well as a physical plot of the antenna’s geometrical structure. Currents in the various conductors making up the antenna elements can also be plotted, as well as a complete tabulation of the NEC engine output.

If you are a MAC user and have the need to do some antenna modeling, give cocoaNEC a try, I think that you will like it.

Explore posts in the same categories:Antennas

Tags:MAC computers

You can comment below, or link to this permanent URL from your own site. Free Modeling Software For Mac

Antenna Modeling Software for the MAC

I like using MAC computers because of the inherent stability of the underlying UNIX operating system, and the immunity to most viruses. One disadvantage, however, is that not all types of programs are written for the MAC. I occasionally have need for an antenna modeling program. On my windows PC, I used EZNEC (http://www.eznec.com) which costs about $100.

I have always wished to have a similar program for the MAC. I have now found an even better program than EZNEC, that is written specifically for the MAC. The program is “cocoaNEC” (http://www.w7ay.net/site/Applications/cocoaNEC/) written by Kok Chen a retired Apple software engineer. The program will run on OS X 10.6 or later, I have been running mine on the latest MAC operating system OS X 10.10, Yosemite, with no problems. This elegant and fast running program is written in OS X’s native programming language. This program takes advantage of all the cores of a modern Intel processor, therefore, it runs fast. The best part, however, is that the program is free.

The downloaded program includes a reference manual and tutorial. Example antenna files can also be downloaded from Kok’s webpage. “cocoaNEC” uses the NEC-2 computational engine. NEC (Numerical Electromagnics Code) was developed by Lawrence Livermore Laboratories in 1981 to simulate the electromagnetic response of antennas and other metal structures.

The antenna characteristics can be input in either one of two ways, via a tabular spreadsheet interface or a special NC programing language interface. The spreadsheet approach is simpler, however, the NC programing interface is more powerful. The antenna’s input information consists of its geometry (for a conductor, the x, y, z coordinates of its endpoints), its excitation, and type of ground (if any).

Free Modeling Software For Mac

The summary output for a three-element Yagi antenna located 10-meters above the ground is shown below.

Free Business Process Modeling Software For Mac

The different color lines represent different frequencies. The antenna can be modeled in free space or above a conducting ground, and the ground conductivity can be varied.

Other outputs consist of a 3-dimensional radiation pattern, driving point impedance and VSWR, as well as a physical plot of the antenna’s geometrical structure. Currents in the various conductors making up the antenna elements can also be plotted, as well as a complete tabulation of the NEC engine output.

If you are a MAC user and have the need to do some antenna modeling, give cocoaNEC a try, I think that you will like it.

Explore posts in the same categories:Antennas

Tags:MAC computers

Free 3d Modeling Software For 3d Printing Mac

You can comment below, or link to this permanent URL from your own site.