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Thanks for the suggestions; I'll take a look at the other thread and the MG site. I do have a lot of cells to look at...plus in general I prefer to work with scripts than GUI's but maybe
that's a personal preference. I think I know enough to proceed but I was hoping to find a script already put...
If you have the rf circuit toolbox you can do something along these lines :
Width1=5e-4;
Width2=3e-4;
Ms1 = rfckt.microstrip('LineLength',1e-2,'Width',Width1,'Height',6e-4,'Thickness',7e-9,'EpsilonR',8.9);
Ms2 =...
You can leave the center tap floating if that's what you want. I'm attaching
a good summary that might help you track down the factor of two you're
picking up (pdf freely available on net)
Thanks for the suggestion. This looks like a useful site. AVR blocks me from uploading the quarantined file to the site. I tried another virus scanner and
it also found the trojan. I think I'll play it safe and assume this threat is real...
too bad.
That's better, but still some questions on gemoetry : This inductor can't be just on
M6; I assume there's another metal layer (M7, AP?...). Also there's gray bar opposite
the ports. Is this a center tapped inductor? Sometimes when you see a factor of two
one suspect is single ended vs...
Thanks for the reply but that's not what I asked.
I want to know if this virus is real or harmless (false positive). AVR already detects it and so far I have quarantined the file but that's preventing me from
using the program.
I downloaded a program that I really need but my antivirus program
(AVG antivirus free edition) says that it has the Agent2.CJSN trojan
virus. Does anyone know about this? Is it a real threat? There's nothing
on the net.
i dont know if this is the right place for this sort of question but I want to
automate lvs process in cadence. I'm thinking of (preferably small) skill
code that does this :
(1)opens a cell in the database in schematic view
(2)write out a cdl netlist
(3)opens layout view of the cell...
I'm running and older version (12.1) (don't have 13 unfortunately). What I use there is : (menu tabs)
HFSS -> Results -> SolutionData -> ExportMatrixData
There's also an EquivalentCircuitExport which I haven't used
The problem with this approach is that the connections between the plates
and the waveports at the airbox boundaries introduce new elements into the
system. Plus, the width and length of these connections,... are new variables.
you should use the full s-param matrix which in your case is a 2x2 matrix ((S11,S12),(S21,S22)) for each frequency point analyzed.
So the variable "s2p" above is a 2x2xN array : the last index runs over the number of frequency points analyzed.
The "s2y" function transforms "s2p" into another...
I know there are different products from Ansoft for planar em simulations
(Nexxim?) which are cheaper than hfss. I have hfss and I prefer to stay
within it. My question is this : can you run hfss in planar em mode? (to get
speed at cost of accuracy...)
since you have s-parameters you should be able to get the capacitance. There's a relatively simple transformation to go from s-param to Y-param
and from that capacitance (or inductance). There should be a past post in this forum that describes this. Looking at your graphs I'd expect there
to be...
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