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 noise figure 

Last post Mon, Mar 14 2011 11:25 PM by Analog Design. 3 replies.
Started by britto 17 Jan 2011 09:22 PM. Topic has 3 replies and 1895 views
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  • Mon, Jan 17 2011 9:22 PM

    • britto
    • Not Ranked
    • Joined on Tue, Jan 18 2011
    • Posts 2
    • Points 40
    noise figure Reply

     Hi,

    how to find noise figure for VGA?

    pls provide tutorial if any..

    thanks in advance.

    • Post Points: 20
  • Fri, Mar 11 2011 8:55 AM

    Re: noise figure Reply

    Have you done S-parameter analysis(In cadence Spectre simulator) ? In S-parameter analysis there is option for noise figure analysis .Because I have done noise figure analysis for LNA by S -parameter anlysis . I have not done for VGA ,But I think its is similar to LNA .

    • Post Points: 20
  • Mon, Mar 14 2011 10:41 PM

    • britto
    • Not Ranked
    • Joined on Tue, Jan 18 2011
    • Posts 2
    • Points 40
    Re: noise figure Reply

     Thanks for ur reply...

    ya we did NF analysis in d same way as that of lna n we got 43db..

    wat s range of NF for VGA 

    • Post Points: 20
  • Mon, Mar 14 2011 11:25 PM

    Re: noise figure Reply

    I have not analysed NF for VGA .But for LNA 3dB NF is agood result with in band of intrest . For VGA also I think 43dB is very poor result . You just compair with some other result of VGA given some published paper .

    • Post Points: 5
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Started by britto at 17 Jan 2011 09:22 PM. Topic has 3 replies.