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Calculate input impedance for matching with spectreRF

engrvip over 8 years ago

I am designing an LNA and want to match its input impedance to 50Ohms port impedance.

During 'sp' analysis in spectreRF , which function will give me idea about this impedance matching.

Gp,Ga , Gmax ,Gumx etc. only gives the gain value depending upon kind of matching at input and output of LNA.

Is it OK to use Z11 and Z22 as input and output impedance values for matching purpose.

Or is their some other way thru which impedance matching is determined in SP or some other analysis with spectreRF.

Regards

Vipul

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engrvip over 8 years ago

Hi Tawna

Thanks for the reply.

I am not sure but I think looking at the reflection coefficient (Zin-Zsor)/(Zin+Zsor) shoule be the best way of measuring impedance matching and could not find any such function in spectrRF sp analysis.

I may be wrong as their might me some other approach to measure matching in spectrRF.

Anyways I have put this query to customer support. Let's see what response they provide.

Regards
Vipul
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Satyanarayan over 6 years ago in reply to engrvip

Well, did you get any reply from them?
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Tawna over 6 years ago in reply to Satyanarayan

Please don't reply to an old thread - this one is 2+ years old. It's best to start a new thread. Best regards, Tawna
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Tawna over 6 years ago in reply to Satyanarayan

Please don't reply to an old thread - this one is 2+ years old. It's best to start a new thread. Best regards, Tawna
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