VHF Communications Magazine
Software Site Links
The number of EM simulation program manufacturers seems to go up by the hour, and you have to investigate in great detail to see what advantages each new player is offering. So you just take a closer look and install the thing on a trial basis. Not only can you download the demo version of XFDTD 5.0 from the Remcom homepage for this purpose, but you can also obtain the Quickstart tutorial, the complete manual and two very fine simulation examples (= a short vertical antenna and a patch antenna) for familiarisation.
The mist is slowly clearing away with regard to short-
In the amateur sector, the EZNEC program from Roy Lewallen, W7EL, has recently been earning a very good name for itself. For US $ 80 it certainly offers the best compromise currently available between price and accuracy (which again is dependent on the number of individual elements with which the aerial structure can be modelled). An easily comprehensible operator surface, an update service on the Internet and – something completely new! – a manual in Word format which can be printed out have put this program out in front for the moment.
Anyone who met Roy and talked to him at HAM-
SONNET Lite 7.0
The manufacturer of the well-
In addition, a version is now on sale with max. 32 MB main memory, but for $ 500.
If this heading sounds somehow familiar, there’s a good reason why: version 2.1 was recently introduced in VHF Communications in the section entitled "An interesting program".
The author, David Pozar (who has also been responsible for some very good technical books on microwave techniques) has developed the program quite considerably. There is now a large WINDOWS 32-
The Internet has some new EM simulation software, known as "Flex-
The program is so universal that it can also be used to investigate many other phenomena, e.g. currents in fluids, heat conduction and distribution, chemical processes, etc. The homepage also lists some other interesting documents. The textbooks, in particular, are first class, and worth the price (e.g. $12 for "Fields of Physics").
Again, something similar, but centring on what is (according to the publicity) a combination of EM simulators and layout orientated CAD software packages which is unique in the world. Here too there is a demo version for testing.
February 2003: there is a new simulation tool available called "LINMIC Interconnect". It is an efficient EM-
Elsie filter design software
The software on this site includes the new Windows version of the passive filter design program Elsie. Other software includes a meter scale drawing program. The software is produced by Jim Tonne, WB6BLD
The free download site of the well known supplier of simulation tools has expanded yet again. In addition to the student versions of Serenade SV (High frequency circuit design) and Ensemble (Wireless circuits and planar antennas), we now also have "Simplorer" (Multi-
No, this is nothing to do with a tuned amplifier circuit or with any kind of filter circuits. We’re talking about a free EM simulator (e.g. for calculating microwave structures or patch antennas). Free up to now for users of Cray or SGI super-
Software for the Radio Amateur
Here’s another link for people who like to spend hours surfing and rooting around. Luckily, everything is listed alphabetically, and so you can carry out a targeted search.
Besser (“better”) – it sounds like an incentive for someone’s own work ethic, and in fact it does have something to do with that. What’s actually behind the name is a company that is mainly active in the field of further education in the RF and communications technology area. Not only are these people kind enough to let you download quite a lot of good calculators for HF engineering, but there are also first-
Those who like to simulate their circuits before testing the first prototypes will enjoy this site. Not only will they find links there to various SPICE model lists, but also data on something really splendid: a converter that generates an S-
The free smulation software TINA-
The program “filter pro” is an active filter design program from Texas Instruments and is described by them:
FilterPro™ Multiple Feedback (MFB) and Sallen-
Circuit simulator “Qucs”
This is an open source circuit simulator with the nice name “Qucs”; it stands for Quite Universal Circuit Simulator. The simulation tool is still being developed but should be no competition for PUFF but is an alternative with som potential.
LC filter calculator
As Windows 7 is becoming more and more common suddenly the beloved DOS programs no longer work. It is useful to switch to a modern "online filter Calculator". This is a short list of tested links:
Address 5: http://www.circuitsage.com/filter_design