The paper deals with the radar antenna modelling using nec win package. Poggio wrote the necmom family of programs at lawrence. Apart from these there are yo, ao and also necwin plus, nec2go. I remember modeling some large antenna arrays with nec on. The main category is antenna analysis software that is about software, antenna analysis software, for ham radio operators and hams. With yagicad it is possible to enter a base design from scratch or use one of a number of saved well known designs.
Ac6la antenna utilities a collection of commercial antenna utilities. Antenna software free download antenna top 4 download. Antenna maker antenna design program for quads, yagis, inverted vees, jpoles, trap dipoles and more. Aces the applied computational electromagnetics society aces is perhaps the professional focal point of advances in all forms of electromagnetics codes and related mathematical models. The numerical electromagnetics code, or nec, is a popular antenna modeling system for wire and surface antennas. Antenna descriptions and pattern plots are easily saved and recalled for future analysis. What is the best software used for antenna design and. Nec has been around a long time though, and i dont think its going away any time soon. The spreadsheet and dialogue box interface is similar to nec win pro, described below under nec 2. Figure 1a necwin plus azimuth pattern for a dipole at 70 feet above average ground at 7. Mininec for windows is antenna modeling tool for the novice, student and hobbyist. M mana is an antenna analyzing tool based on the moment method introduced in mininec mini numerical electromagnetics code version 3.
To download and try the software click upmost two links below on the right. As with any purely numerical methods, the accuracy is whatever you choose to make it, commensurate with processing power, of course. Finally, it is advisable to check the references below. Eznec pro uses its own easytouse antenna description file system which has been proven by a large number of eznec and eznec pro users, although it is able to both read to a limited extent and write nec. Nec2 specifically provide users, either those experienced with the nec2 processes, or for those who are neophytes but want to model their own antennas. It is restricted to antenna elements of a single diameter although some software providers have introduced corrections for linear elements whose diameters varies. Eznec is a powerful but very easytouse program for modeling and analyzing nearly any kind of antenna in its actual operating environment. The nec files may be used with any of the nec 2 or nec 4 programs such as 4nec2, gnec or cocoanec, however some of them with tapered elements may only be simulated accurately by nec 4. There are other, non nec or mininec kernel based programs. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quads slight advantages over a tribander yagi with the same number of elements. And other em electromagnetic modelling software based. The numerical electromagnetics code nec is a popular antenna modeling software package for wire and surface antennas.
Nec simulates the electromagnetic response of antennas and metal structures. There is also a sample nec model that you can use to test your setup. See the pattern and antenna currents on the same color 3d display as the antenna. Although communication with nec 4 is largely by means of nec format files, these are not generally available except after exiting eznec pro. Details on how to construct this antenna, both as standalone and as a parabolic dish feed can be found at this link. New mininec free expert mininec classic software bad link. Mininec pro antenna analysis software black cat systems. Is there a 3d modeling link budget software for radio. Concerning adding radials to my current antenna, the tuner is mounted in my crawl space against the wall. Yag files can be converted using the msdos based scale.
Nec24 based antenna modeler, analyzer and optimizer. Then a wire meander helix antenna with a new structure had been designed and simulated. A wealth of information and tutorials on antennas by the author of the qst series a beginners guide to modeling with nec mininec pro antenna analysis software antenna analysis program for windows and macintosh computers. My interest in antenna modeling has always been casual, needing it when an upgrade to my antenna system was needed. There are several professional grade programs that will do what you ask, such as mathcad there are many others and but they are expensive and may have a steep learning curve, however, you can do what you need to do using simpler and cheaper pro. View antenna display, showing the wires making up the model of the fiveelement beam, with currents and 2d slice superimposed to show orientation. Nec2go powerful antenna modeling tool using nec 2 computing engine. The big 3 in ham antenna modelling software are eznec, 4nec2 and mmanagal. Dec 14, 2019 eznec was developed to work on windows xp, windows vista, windows 7, windows 8 or windows 10 and is compatible with 32bit systems. One disadvantage, however, is that not all types of programs are written for the mac. Mininec pro is an antenna analysis program for windows and macintosh computers.
Nec based antenna modeler and optimizer by arie voors 4nec2 is a completely free nec2, nec4 and windows based tool for creating, viewing, optimizing and checking 2d and 3d style antenna geometry structures and generate, display andor compare nearfarfield radiation patterns for both the starting and experienced antenna modeler. Help file covering the use of the mininec antenna modeling program. The following files and links point to nec aoyo models of various ham antennas that i have simulated andor tested over the past 30 years as an antenna designer. An html version of the users manual for nec has been created by peter richeson. Autoez automated use of eznec autoez works in conjunction with the eznec antenna modeling program and allows you to use variables to control diverse aspects of the model. You can then run multiple eznec test cases while autoez automatically changes one or more variables between runs. How it works the code is based on the method of moments solution of the electric field integral equation for thin wires and the magnetic field integral equation for closed, conducting surfaces. My problem was to get a reasonable, lowcost 4010m attic antenna in a crowded urban setting with metal surfaces everywhere. How to start modeling antennas using eznec greg ordy, w8wwv ctu, contest university dayton, may 19, 2011 version 1. Nec 4 further allows electrically small antennas to be modeled with better accuracy. Much of my antenna research work is based on systematic antenna modeling in a. Wire antenna software free antenna modeling software. And other em electromagnetic modelling software based on mesh engines such as feko em, ansys hfss, sonnet em which do cost a pretty buck. If it expires, try changing the date from the control panel and it will work again.
Take a look at my tutorial for describing antennas for wlan deployment. Software beta testing was provided by a group of fellow amateurs. The k6sti nec2 program necwires now has an independentlydeveloped windows interface called winni developed by pat wintheiser, available through the unofficial nec archives. I downloaded the demo of maxwell, and am playing around with it a bit. Dxf file input, 2d and 3d plots and antenna views, and graphical outputs. Numerical electromagnetics code nec2 unofficial home page. Antenna modeling software and tutorials electrical. From there the antenna passes through the wall to the outside, roughly 1.
S nec software is one of a specific for antenna design and simulation. Zplots uses excels charting capabilities to plot impedance data obtained from a variety of sources, including the w5big aim4170 antenna analyzer, the n2pk vector network analyzer, and several different antenna modeling programs. Mininec should not be confused with nec, which is a large antenna analysis program written in fortran and designed to run on mainframe computers. Nec 2 nec 2 is a highly capable version of the code which is in the public domain. Antenna modeling software for the mac henry ott consultants. The numerical electromagnetics code, or nec, is a popular antenna modeling system for wire. Mmana antenna modeling program tutorial, part 1 a stepbystep invertedcoathanger antenna mmana modeling program design example. From there it takes off at the 32 degree angle as you see in my antenna notes and model. It was originally written in fortran in the 1970s by gerald burke and andrew poggio of the lawrence livermore national laboratory. Yagicad is a fully integrated analysis and design package primarily intended for vhf yagi aerials. The spreadsheet and dialogue box interface is similar to necwin pro. Obtaining radar antenna radiation model was necessary so one can later use it for calculation of radiation strength and. Click here for an offsite explanation of various electromagnetic and antenna modeling techniques including the moment method.
Nec win pro antenna analysis software with the user in mind. Necwin pro pop antenna analysis software with the user in mind. The nec simulation model, and sample output, can be found here. Most programs using nec include features that run batches of nec calculations to produce a composite. Rotate the antenna display and zoom in for details. Multiple patterns can be superimposed on a single graph for comparison. What is the best software used for antenna design and simulation. Mar 23, 2015 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. As its been 7 years since ive done so, i surveyed the available software again and found eznec 5.
This makes computational electromagnetics cem important to the design, and modeling of antenna, radar, satellite and other communication systems, nanophotonic devices and high speed silicon electronics, medical imaging, cellphone antenna design, among other applications. This design can then be optimised or scaled to suit particular requirements. The length of this antenna in relation to wave length is very small, in addition to this antenna have a high radiation resistance and low imaginary resistance. This link is listed in our web site directory since sunday dec 20 1998, and till today nec win pro has been followed for a total of 31145 times. By following the instructions and examples provided it took only a few days. Ads software is good for cases when you want to simulate and characterize your antenna design in companion whit other microwave components for example an antenna which is connected to an amplifier. Getting settled and getting started figure 2an eznec elevation pattern for a dipole at 70 feet above average ground at 7. It can model a wide range of antenna types, calculate radiation patterns, power gains, fronttoback ratios, feed impedances. Super numerical electromagnetic code snec software and. View antenna display, showing the wires making up the model of the fiveelement beam, with currents. Intel cpu is required on xp and vista systems but not on windows 7 and later. New modelling capabilities in commercial software for high. Top 4 download periodically updates software information of antenna full versions from the publishers, but some information may be slightly outofdate using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for antenna license key is illegal. Click on the image to the left to see a screen shot from eznec v.
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