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Antenna Modeling

Introduction

Antenna modeling used to be the domain of scientists and engineers with very expensive antenna ranges covering acres and acres of land strewn with expensive equipment. With the proliferation of personal computers and affordable (even free) software, antenna modeling has become a popular amateur activity. With modeling you can determine the pattern, feed point impedance and even the SWR of your antenna system before cutting one piece of wire or one tube of aluminum. This can save an awful lot of tree and tower climbing.

Articles

Web Links

 

http://www.qsl.net/4nec2/

4nec2 is a free Windows based antenna modeler and optimizer.

·         Nec2go
Simplified Nec2 modeling for amateurs and professionals. Free demo.

·         MM Hamsoft
Includes free Mininec based Antenna Analyzer

·         EZNEC Antenna Software by W7EL
Free demo will run ARRL Antenna Book files.
Sample EZNEC Files

·         The unofficial Numerical Electromagnetic Code (NEC) Archives
Additional information not found in the NEC-2 manuals.

·         Antennas, Service and Education
by L. B. Cebik, W4RNL
A wealth of information and tutorials on antennas by the author of the QST series "A Beginner's Guide to Modeling with NEC"

·         MININEC Pro Antenna Analysis Software
Antenna analysis program for Windows and Macintosh computers.

·         Antenna Modeling Software &Other Utility Programs
by Dan Maguire, AC6LA

·         Antenna Modeling Files
To be used with either NEC-4 or Yagi Optimizer modeling programs.  While YO is no longer available, .YAG files can be converted using the MS-DOS based SCALE.exe program that appears in the YAGIS subdirectory when YW is installed.  YW comes with the ARRL Antenna Book.

·         G4FGQ's Software
G4FGQ's Software -- A collection of free engineering/modeling programs written by Reg Edwards G4FGQ.

·         Yagi Antenna Design
This site offers a free interactive design page to let hams design Yagi antennas for HF, VHF and UHF

·         EZNEC tutorials by Steve G3TXQ.