Group Delay of a GLP [closed]

1. How do you calculate group delay?
2. What is a group delay response?
3. What is group delay in RF?
4. What does negative group delay mean?

How do you calculate group delay?

τ g ( ω ) = - d θ ( ω ) d ω , where θ ( ω ) is the phase, or argument, of H ( e j ω ) . Use the grpdelay function to compute group delay of a filter. For example, verify that, for a linear-phase FIR filter, the group delay is one-half the filter order.

What is a group delay response?

The so-called “group delay” is simply the time lag between the envelope of input burst and the envelope of the amplitude of the output burst. So, group delay means a propagation delay through a filter, measured on the envelope of the signal.

What is group delay in RF?

Editorial Team - everything RF

Group delay is a measurement of the time taken by the modulated signal to get through the system. Group Delay is measured in seconds. For an ideal filter, the phase will be linear and the group delay would be constant.

What does negative group delay mean?

The magnitude of the group delay defines the prediction horizon, i.e., the time the output y(t), here called a predictor, predicts the input x(t) ahead of time. In general, negative group delay of an input/output system causes the output signal to anticipate or predict characteristics of the input signal.