Properties of ROC of Laplace
Transform:
1.
The ROC of X(s) consists of strips parallel to the jω axis in the s-plane.
2.
The ROC does not contain any poles.
3.
If x(t) is of finite duration and is absolutely
integrable, then the ROC is the entire s-plane.
4.
It x(t) is a right sided signal, that is x(t) = 0
for t<t0<∞ then the ROC is of the form
Re(s)> amax , where a max
equals the maximum real part of any of the poles of X(s).
5.
If x(t) is a left sided, that is x(t) = 0 for
t>t1> -∞, then
the ROC is of the form Re(s)< amin , where amin equals
the minimum real part of any of the poles of X(s).
6.
If x(t) is a two sided signal, than the ROC is of
the form a1<Re(s)<
a2.
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