how to build your own model in the hspice?

[triquent]

I worked on the RTD(resonant tunneling diode) model. RTD has no model in the spice. How can I build my own RTD model into the hspice and use it to simulate the RTD/HEMT circuits I designed?

 

[leo_o2]

You must develop large-signal model and small-signal model first. Usually VCVS,VCCS,CCVS&CCCS will be employed to implement.

 

[triquent]

thanks. can you talk more in detail about how to build small and large signal model?
1) We have some equations to describe the RTD's DC characteristics. I think that is large-signal model.
2) also we use network analyzer to test the RTD's s-parameter. we got some curve for the R~frequency C~frequency L~frequency(RLC is the component of the equivalent circuti). Is this the small signal model?
3)waht do you mean by this?? Usually VCVS,VCCS,CCVS&CCCS will be employed to implement.

You must develop large-signal model and small-signal model first. Usually VCVS,VCCS,CCVS&CCCS will be employed to implement.