Network Functions − s-Domain Analysis of Circuits 449
Substituting the values of K
1
,K
2
and K
3
, the equation is written as follows:
Is
sss
()
.
()()
.
()
=
-
+
+
+
+
-
+
12 5
1
50
2
37 5
3
Taking the inverse Laplace transform, the following form is obtained:
it
eee
ttt
()
..
=-+-
---
12 550375
23
A
10.11 POLES AND ZEROS OF NETWORK FUNCTIONS
AND THEIR SIGNIFICANCE
We have calculated network functions in the form of driving point impedance or admittance
functions. As mentioned earlier, a network function, also called transfer function, is represented
as follows:
Ns
Ps
Qs
asasasa
bsbsbsb
nn
mm
()
()
()
==
++
++
++
++
-
-
-
-
on
n
om
m
1
1
1
1
1
1
…
…
where a
0
, a
1
, …, a
n
and b
0
, b
1
, …, b
n
are the ...
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