[eispice] Re: py2port

Charles,
 
    Do you have any idea what it would it take to port eispice to a MAC? I 
tried building from the source and I get a lot of errors and warning w.r.t. 
many of the header files.
 
  Jon


> Date: Tue, 11 Mar 2008 13:53:17 -0400> From: charles@xxxxxxxxxxxxxxxxxxxxx> 
> To: eispice@xxxxxxxxxxxxx> Subject: [eispice] Re: py2port> > Thanks Matt, 
> it's something I've wanted to write for a couple years now, ever > since I 
> read Howard Johnson's "High Speed Signal Propagation" and finally found > 
> some time.> > That line connects a W element to the end of the two-port 
> chain. The W element > is a lossy transmission line model. The arguments are 
> (kind of similar to the > SPICE W-Element model):> > length -- length of 
> T-Line (inches)> L -- inductance per meter (H/m)> C -- capacitance per meter 
> (C/m)> R0 -- series resistance per meter (Ohm/m) -- default = 0> G0 -- 
> parallel conductance per meter (S/m) -- default = 0> Rs -- skin effect 
> resistance (Ohm/(m*sqrt(Hz)) -- default = 0> Gd -- dielectric loss 
> conductance (S/(m*Hz) -- default = 0> > You can use a tool like mmtl 
> (http://mmtl.sourceforge.net/) to calculate the > arguments for arbitrary 
> t-line geometries.> > There is also a simple non-lossy t-line model that's 
> easier to use called "T" > with these arguments:> > length -- length of 
> T-Line (inches)> Zc -- characteristic impedance (Ohms)> er -- permitivity 
> (unitless) -- default = 4.3> > For some more examples you can try:> > import 
> py2port> > help(pytport.twoport)> help(pytport.W)> help(pytport.T)> > 
> Cheers,> Charles> > > Matt Ettus wrote:> > Charles Eidsness wrote:> >> Hi 
> All,> >>> >> This isn't eispice news but I just released a new tool called 
> py2port. It can be > >> used to perform two-port and one-port linear circuit 
> analysis. I thought the > >> members on the eispice list might be interested. 
> You can find it here:> >>> >> http://www.thedigitalmachine.net/py2port.html> 
> >>> >> If you have any comments, questions, or concerns please let me know.> 
> >> > > > > Charles,> > > > Very cool work. I like the PRBS part especially. 
> Can you tell me what > > this line is:> > > > |cct += py2port.W(10, 
> 6.35011e-7, 5.10343e-11, 0.0, 0.0, 0.0, 0.0)> > > > It looks like it adds a 
> component, but I don't know what a W is.> > > > Matt> > > > |> > > > > > 
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