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Optical Fiber Telecommunications VA, 5th Edition
book

Optical Fiber Telecommunications VA, 5th Edition

by Ivan Kaminow, Alan E. Willner, Tingye Li
July 2010
Intermediate to advanced content levelIntermediate to advanced
944 pages
34h 12m
English
Academic Press
Content preview from Optical Fiber Telecommunications VA, 5th Edition
Not surprisingly, the zero-frequency voltage gain is A
vc
(0) = g
m
R
l
. If gain A
vc
(s)
is normalized to this zero-frequency value, Eqn (18.17) can be cast in the form,
A
n
ðsÞ
=
A
vc
ðsÞ
A
vc
ð0Þ
=
1 þ Qs=!
n
ðÞ
1 þ s=Q!
n
ðÞþs=!
n
ðÞ
2
; (18.18)
where
!
n
=
1
ffiffiffiffiffiffiffiffiffi
LC
lo
p
(18.19)
is the self-resonant frequency of the circuit and
Q =
1
!
n
R
l
C
lo
=
B
u
!
n
=
ffiffiffiffiffiffiffiffiffiffiffiffi
L
=
C
lo
p
R
l
(18.20)
is the circuit quality factor, which is seen to be the uncompensated bandwidth, B
u
,
normalized to the circuit self-resonant frequency. Equations (18.17) and (18.18)
confirm that the insertion of the inductance in the drain load circuit of the
uncompensated topology establishes a left half-plane zero that
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Publisher Resources

ISBN: 9780123741714