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Error detected by hpeesofsim during netlist flattening

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brightisle

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hpeesofsim

hi all

I would like to discuss step recovery diode(SRD) modelling using SDD.When I defined the equations and then simulated,the error is :
error detected by hpeesofsim during netlist flattening.While evaluating expression'SRD1.SDDNP1.I':expression has not been defined.

I am puzzled with this error .Please feel free to contribute your advice.Thanks!
 

error detected by hpeesofsim netlist flattening

Could be many reasons. Zap and WinRAR your project files and upload here.
 

detected by hpeesofsim

hi VSWR

The error what I said has been worked out .But I am also puzzled with the parameters of the SRD modeling in SDD.Such as the forward capacitance of the diode Cf,I don't know how to calculate its value.Here is my modeling and look forward to your advice!

What is more ,can you help me for the paper: "Characterization and Modeling of SRD Diodes for the Computer Aided Design of a Generator of Ultrashort Pulses." Master-Thesis,HFT,University of Kassel,November 1999.

Thank you very much !
 

Re: hpeesofsim

brightisle said:
hi all

I would like to discuss step recovery diode(SRD) modelling using SDD.When I defined the equations and then simulated,the error is :
error detected by hpeesofsim during netlist flattening.While evaluating expression'SRD1.SDDNP1.I':expression has not been defined.

I am puzzled with this error .Please feel free to contribute your advice.Thanks!
Click to expand...
I am also having the same simulated error with you, but I have checked that the equations in the model is all defined, I have no idea about it, how did you get over the problem, plz give me some advices. thank you!!
here is the error:
error detected by hpeesofsim during netlist flattening.
while evaluating expression 'X1.SDDNP1.I':
expression has not been defined.
error detected by hpeesofsim during netlist flattening.
unresolved references:
X1.I
 

There isn't any netlisting error in ADS. It works..
 
Dear all,
Hi.
I have a same error problem with my design, the error is: " 'M1' is an instance of an undefined model 'nch' ."

If any one know the solution, it will be appreciated noticing me. Tnks.
 

Hi rafei,

You should add MOSFET model named nch to your schematic simulated!
I have the same problem as following:

hpeesofsim (*) 2006A.400 Sep 28 2006 (built: 09/28/06 03:30:08)
Copyright Agilent Technologies, 1989-2006.
--------------------
Simulation terminated due to error.
--------------------
Simulation / Synthesis Messages

Error detected by hpeesofsim during netlist flattening.
While evaluating expression `xr.r3.R':
expression has not been defined.
Error detected by hpeesofsim during netlist flattening.
Unresolved references:
xr._node45
xr.hspice_log

Anyone could give me some practical solutions, thank you !
 

Re: hpeesofsim

can you pls tel hw did you rectify the error.
error detected during netlist flattening
while evaluating expression c1.level,
expression has not been defined.

unresolved references:
DAC1


PLS HELP
 

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