Mmana-gal Antenna Files

Before diving into file structures, a quick context: MMANA-GAL is the modern evolution of the classic MININEC antenna simulation code. It uses the Method of Moments (MoM) to calculate current distributions on wire structures. Unlike expensive commercial software (like NEC or CST), MMANA-GAL is freeware, lightweight, and exceptionally fast for wire antennas such as dipoles, Yagis, loops, quads, and verticals.

The “GAL” in its name refers to the Genetic Algorithm optimizer—a powerful feature that automatically adjusts wire lengths, spacing, and diameters to meet your target impedance, gain, or SWR. mmana-gal antenna files

But none of this works without an antenna file. Before diving into file structures, a quick context:

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MMANA-GAL is a popular tool for designing and analyzing wire antennas. To get the most out of it, you need to understand its native file format — the .maa file. These files are simple text files that contain all the geometry, frequency, and sometimes simulation settings for an antenna. Include a small README in each antenna folder

Below is a breakdown of the file structure, plus tips on creating and sharing good antenna files.

The very first line of any .maa file is a comment. It is often ignored by the solver but is vital for organization.

3 Element Yagi for 50 MHz, optimized for low SWR