RF Cool Tools by Jeremy Goldblatt
RF Design Simulation Software Free  (Mac/Linux/Unix/Windows)
Broadband Match | S-Parameter File Plotting | Filter Synthesis | S-Parameter Bisection and Complex Rational Polynomial  Fitting

Before clicking the Launch button, please take a moment to look through some program screen shots , or view some how to videos.
RFcooltools Real-Time-Design Professional click here to see highlights or launch the program by clicking on one of the icons below
Real-Time Design version (see changeLog)
Unable to launch?  Starting with Java 7, running web initiated applications has been set to not work by default.  As stated on the java.com website:

"It is highly recommended not to run these types of applications. However if you still want to run these apps, run only if you understand the risks and implications. As a workaround, you can use the Exception Site list feature to run the applications blocked by security settings. Adding the URL of the blocked application to the Exception Site list allows it to run with some warnings."

I spent thousands of hours writing this software for myself and others to use, so If you still want to run this software you can do the following.

Find the java console:
-> in the Start menu search "configure Java"
-> in the security panel edit the Exception Site list by adding exactly

-> click OK and restart your browser

NOTE: Include the "http://", and "www" as well.  If it still does not work remove the "www"

How To :

S-Parameter Bisection (pdf)

Complex Rational Polynomial Fitting and Root Discovery (pdf)
Launch Realtime Pro =>
Launch Realtime Regular =>