Big John
Newbie level 1
Consider the following transfer function (voltage out divided by voltage in) of a circuit:
(s-1)/(2s+1)
The question was posed in our engineering class, at what frequency does the gain equal zero? Zero here means for an input signal of a given frequency there is no signal at the output, ie. we are not talking about 0 dB.
I am of the opinion that there is no frequency for which the gain equals zero. The transfer function has a zero at s = 1, but that is not the same as saying the gain = 0 at that frequency.
What do you all think? Is my reasoning correct? And furthermore, what is the significance of a zero on the positive real axis here?
Thanks!!!
(s-1)/(2s+1)
The question was posed in our engineering class, at what frequency does the gain equal zero? Zero here means for an input signal of a given frequency there is no signal at the output, ie. we are not talking about 0 dB.
I am of the opinion that there is no frequency for which the gain equals zero. The transfer function has a zero at s = 1, but that is not the same as saying the gain = 0 at that frequency.
What do you all think? Is my reasoning correct? And furthermore, what is the significance of a zero on the positive real axis here?
Thanks!!!