Small signal equivalent circuit model for the HJFET?

[nass2011]

small signal equivalent circuit model for the HJFET??

hello all,

Looking for small signal equivalent circuit model for the HJFET. can someone knows ?

Please help me it's urgent...

Thank you in advance,
N

 

[berkeman]

hello all,

Looking for small signal equivalent circuit model for the HJFET. can someone knows ?

Please help me it's urgent...

Thank you in advance,
N

Can you just use the SPICE model from a device manufacturer? Whad HJFET do you have in mind?

http://www2.renesas.com/microwave/en/parameter/low_gaashj_dp.html

.

 

[jsgruszynski]

To a first order all 3-terminal device have only 4 variants of a hybrid-pi depending on whether they are VCVS, VCIS, ICVS or ICIS (of which you actually only run into two - for BJT ICIS or FET VCIS).

The device model only really gets device technology specific in the nonlinear model which is always reduced to a linear hybrid-pi in a circuit simulator.

 

[nass2011]

Hi berkeman,

The HJFET transistor model that I'm looking for is NE3514S02. I need to know how we

determine the extrinsic and intrinsic parameters...

Is there tool or Matlab script ?
Thank you in advance,

N