[eispice] Re: py2port
- From: Jon Choy <jonchoy@xxxxxxxxxxx>
- To: <eispice@xxxxxxxxxxxxx>
- Date: Wed, 12 Mar 2008 13:00:56 -0500
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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