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Design >> Analog Design >> Representation/Effect of a delay element in the frequency domain?
https://designers-guide.org/forum/YaBB.pl?num=1444284763

Message started by Rosh on Oct 7^th, 2015, 11:12pm

Title: Representation/Effect of a delay element in the frequency domain?
Post by Rosh on Oct 7^th, 2015, 11:12pm

Hi everyone,

If I have a simple RC low pass filter in which the output is taken across the capacitor, with a particular cut off frequency say x Hz.

Now if I were to introduce a delay in the path of the resistor, how will the bandwidth of the LPF change? How do I visualize this delay in the frequency domain?

Title: Re: Representation/Effect of a delay element in the frequency domain?
Post by loose-electron on Oct 9^th, 2015, 5:17pm

fixed time delay can be represented as a phase delay in frequency domain. Variable phase as a function of frequency.