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This program was later adapted for use on the IBM PC by Michaelis, N8TR (ex- N8ATR), and for Windows by Straw, N6BV. Such a program was used by Hillenbrand, N2FB, to optimize Yagis. Others (Mailloux, Thiele, Cheng and Cheng) have elaborated on this program to perform further analysis and optimization. Morris for his PhD dissertation at Harvard University. One of the first Yagi-modeling programs reported in the literature was written in 1965 by I.
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Modeling always has its limitations, partly because the model that we have to describe (enter into the program) can almost never be described in the same detail as the real thing (and especially its environment), and partly because of numerical limitations in the calculating code used. Modeling is done in all branches of science. Antenna-modeling programs are computer programs that via mathematics calculate and predict the performance (electrical, mechanical) of an antenna. This may be a physical model (such as a scale model) or a mathematical model. What is modeling? It is evaluating the performance of a system that is governed by the laws of physics using a model. This was when some of the old myths were born and the rat race for decibels was started. Building full-size models or scale models and testing them on wide-open test sites were out of reach of most amateurs. ANTENNA-MODELING PROGRAMS Until not too long ago, predicting antenna performance was more a black art than a scientific or engineering activity, especially in Amateur Radio circles. In this chapter we’ll look at how they can be used as design tools for circuits and antennas. For hams, computers are not only an excellent tool to gather information via Web sites, they are used for administrative tasks (logbooks, contests-logging, etc). One of the few constants we see is change, and the increase of the rate of change! What today is state-of-the-art is outdated tomorrow. Most of us can hardly imagine what our daily life, what our hobby would be like, without our PC or the Internet. The PC and the Internet connection have both become very important tools for the active radio amateur. In 2003 the answer is somewhere around 95%. When I talk at radio clubs, I usually ask how many in attendance have a PC and how many have Internet. I thank my friend Pierre for his help and friendship. He was an ideal partner for proofreading and counseling on these subjects. Pierre has lectured on antennas and antenna modeling before many radio clubs.
He specialized in microwaves and is very familiar with antennas, both professionally and as an amateur.
#K6sti yagi optimizer download software
CHAPTER 4 Antenna Design Software Pierre Cornelis, ON7PC, an electronic engineer by education, has worked in several engineering jobs for the Belgian National TV and broadcasting company.