Transistor for a wideband LNA design is unstable!

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kella

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transistor stability

hello Friends

I am trying design wideband LNA and the transistor which I am using is unstable and when I am making it stable the transistor s-parameters are also chaning with stability.

Kindly suggest me your views and guide me if I am doing some thing wrong.

regards
 

Re: transistor stability

You will find a good tutorial here:

**broken link removed**
 

Re: transistor stability

what do you mean by 'the transistor bocome unstable'?
Is it the current or what? 8O
 

Re: transistor stability

u can use ads -s parameter-stability circle
 

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