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https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> Group delay https://designers-guide.org/forum/YaBB.pl?num=1325441583 Message started by raja.cedt on Jan 1st, 2012, 10:13am |
Title: Group delay Post by raja.cedt on Jan 1st, 2012, 10:13am hello, can any one please tell me how group delay of cascaded system will be? I have 4 cascaded broadband amplifiers and i know each stage group delay under proper loading, so what is the overall Group delay. Any kind of reference will be appreciated Thanks, Raj. |
Title: Re: Group delay Post by rfidea on Jan 1st, 2012, 12:15pm It must be the sum of each block! Use the fact that the argument of a complex product is the sum of the arguments Tg = -d(arg(Gtot)) / dw = -d(arg(G1*G2)) / dw = = -d(arg(G1)+arg(G2)) / dw = - d/arg(G1)/dw - d/arg(G2)/dw = Tg1 + Tg2 |
Title: Re: Group delay Post by raja.cedt on Jan 1st, 2012, 12:37pm hello, thanks you. I forgot about this. Do you have reference based on group delay, i want to improve group delay of my peaking amplifier source capacitive degeneration . Thanks, Raj. |
Title: Re: Group delay Post by ywguo on Jan 2nd, 2012, 8:25am http://en.wikipedia.org/wiki/Group_delay What is peaking amplifier? |
Title: Re: Group delay Post by loose-electron on Jan 2nd, 2012, 12:57pm Is there any reason it would not be the sum of the delays? None that I can think of. |
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