Welcome to Durnan.org
Downloads - Relevant datasheets, application notes and tutorials etc
Downloads - Key Dos and Windows RF Design Software plus utilities (Some RF Simulation History here)
GNU DIA. A diagraming and vector image processing software (GPL 2 License)- Vipec 3.1.2. A compact like linear S parameter design software (GPL 2 License)
- Smith V4.1.0.0. By Fritz Dellsperger - Please see pricing for free and commercial versions at his website http://fritz.dellsperger.net
- DOS MIMP v 1.0 by Dan Moline. The Motorola Impedance Matching Program written back in 1992. I was lucky enough to work with Dan towards the end of what was left of the various takeovers of the Motorola US RF Power Division. But the program still has utility even if in DOS which is not a problem for those prepared to install DOSbox
- Almond. Placed on the DOS public domain boards many years ago it contained many of the features of Classic DOS Compact (a linear S parameter circuit simulator). By Chris Trask of Sonora Radio Research? it goes a little further than MIMP and requires the Use of DOSbox. I've spent a little effort to rewrite the manual in LaTeX. Dates back to around 1983 just around/before the release of the first EESof Touchstone simulator
- Ansoft Designer Student Version. (please respect the license). Up until about 2001 a Windows version of the famous Compact Software (linear simulator) was available as the ARRL Radio Designer (or Super Compact)and included with the ARRL Radio Handbook. At that time Compact software was bought out by Ansoft. Ansoft Designer is this same software when Ansoft integrated it into its offering. It has a modern windows interface and is still very servicable as a linear simulator
- HP Appcad. When HP was still primarily an RF and associated test equipment manufacturer it included a RF semiconductor division and wrote Appcad as an easy to use calculator for basic design of circuits and analysis of smith charts. It was recompiled by Agilent and so is available on the net with the Agilent logo. It has a couple of nice features such as a mixer product calculator
- SPara123. A very nice S,Z,H parameter viewer, matching program
- uSimmics-5.8. This is the new name for the successor to Qucs - Studio so as to differentiate it from QUCS name which seems to have forked to QUCS-S. Integrates a number of RF simulation technologies that are very nice. GPL software that is very capable with linear, nonlinear and harmonic simulation possibilities. Probably to best open source alternative to Microwave Office or Keysight ADS
- RFSim99. A nice easy to use, albeit limited S parameter linear simulation tool that can nevertheless prove very useful for RF design tasks, This appears to the a recompiled? version by G0FTD (Andy) that works on current versions of Windows.
- KE5FX GPIB Toolkit. Everybody needs a gpib controlled HPGL HP7470 plotter emulator on their computer these days. KE5FX has written a suite of tools for easy GPIB capture of data from instruments.
- GNU AWK (gawk) 3.1.6. When you need to run and develop AWK scripts for parsing data on Windows this is what you need.
- GNU Notepad++ v8.8.5 When you need a programmers editor I generally prefer this and have used it to create this website, the Touchstone files and to write code (Java/AWK etc. etc.). Sometimes you want something simple.(.
- The Application targeted (not Enterprise) SDK v.25 Just about the latest version of the Java JDK.
- The Application targeted (not Enterprise) SDK v.8 After Sun Microsystems went belly up and was bought by Oracle things continued on roughly as normal until some aspects of the core were depricated. One of these was COM. The community stepped in with RXTX. For some v8 of the JDK was a highlight and they build for that. Both v8 and v25 support Java2 but the degree of deprication of Java features varies. I still have code that compiles cleanly after 25 years as the move the Java 2 happened fairly early and before Sun's demise. So far COM has been the biggest problem and RXTX was not finished but this was years ago and may have been fixed by now.
- DOSBox 0.74 It's amazing how many good bits of old DOS software there are (NEC, MININEC, PUFF, Quickbasic/QB45 etc. etc.) and to run them on the new versions of windows you are going to need to install DOSbox
- jvider 1.8 A Java2 Swing GUI builder to help turn command line Java programs into professional looking windows driven applications. It looks like it might be abandonware now but is available all over the web. Available from CNET https://download.cnet.com/download/jvider/3000-2213_4-10226399.html
- Apache netbeans 28 A popular professional IDE for Java Application development as well as enterprise work
- Microsoft VisualStudioSetup A popular professional IDE by Microsoft for Application and Enterprise development. netbeans and Visual Studio bear a striking resemblence, particularly early versions of netbeans.
- JGRASP 2.0.6_19 By Auburn University. A popular teaching/ semi-professional IDE for Java Application development without as many bells and whistles
- Pencil-Setup v3.0.0 https://pencil.evolus.vn/Next.html An unsual but very useful GUI mockup utility that makes documenting the software product specification document just that little bit easier - bit nice than a scribble on the back of a napkin
HP Application note 95, HP Journal Feb 1967. This application note introduced the instruments and methods of S Parameter design to many at a time when we were seeing GHz FT BJT's entering the market. The methods have essentially remained unchanged and is still a good and valid introduction to microwave circuit design using S parameters.
A smith chart. That can be printed and is clear in Black and White (laser printer. Useful for traditional pen and paper design.
The RCA 2n3478. Datasheet
BFY90 .s2p. A 2 port Touchstone file to 1000MHz, VCE=5v Ic=2mA