From: Stefan Jahn <jahn@mw...> - 2004-06-28 14:44:18
On Fri, 25 Jun 2004, richard wrote:
> Hello Jahn
Hello! Actually my first name is Stefan...
> Firstly I am sorry but i can't type German!
You don't need to feel sorry for that, not at all.
> I am an RF engineer in the UK and a bit of a home Linux enthusiast, i
> have seen your programme qucs and it seems very interesting. I would
> like to be able to help in any way, i have a small knowledge of c & c++
> but i suppose my real strengths would be RF knowledge. I have a good
> working knowledge of MWO, Eagleware and other software, in previous work
> i have designed filters, my current job involves design of all sorts of
> RF circuits. I have written code before to calculate filter topologies ,
> (just standard LP HP and directly coupled BP), inductance of air coils
> with s2p generation and other RF related stuff (Impedance manipulation
> of s2p files).
> If i can be of any assistance please email me back, i think the job you
> have undertaken will be a good challenge and will be very rewarding once
> you have a good simulator. I must add i was impressed with the GUI, it
> was intuitive which is always a good starting point!!
Thanks for givin' further motivation... I am not sure how you could help
us. If you are familiar with something regarding RF design you're
possibly also familiar with the mathematical models behind the components
you used. If that is you can scribble these down (e.g. S-parameters of
some kind of component, you mentioned air coils?). The filters you
designed may possibly go into a "Filter synthesis" program as is on our
TODO list. Where these filters based on lumped components or
transmission line sections? If you are not able to program something in
C++ using the Qt GUI: it already would be enough to have some latex
component describing how things work. Typing formulas and wrapping a GUI
around it can do others (e.g. Michael or myself). So if you are able to
document your knowledge which you think may be useful for Qucs in latex:
that would be very helpful!
If you want to know more about our "task list" you can go to
<http://sourceforge.net/pm/?group_id=90337> and have a look. Anything
regarding these tasks (also by just creating a knowledge base) is helpful.
Thanks in advance,
Berlin University of Technology
Einsteinufer 25, Sekr. HFT 5-1
G E R M A N Y
Phone 0049 30 314 798 08