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Microwave Engineering
book

Microwave Engineering

by Ahmad Shahid Khan
May 2014
Intermediate to advanced content levelIntermediate to advanced
800 pages
24h 50m
English
CRC Press
Content preview from Microwave Engineering
436 Microwave Engineering
conductance representing the copper losses, G
B
is the beam loading and G
L
represents the load conductance.
Effective conductance of this circuit is related to the effective shunt resis-
tance R
sh
as
G = G
C
+ G
B
+ G
L
= 1/R
sh
(12.58)
The necessary condition for oscillations in the cavity is
|G
e
| G (12.59)
The electronic admittance Y
e
given by Equation 12.57 can be written in the
rectangular form as
Y
e
= G
e
+ jB
e
(12.60)
where G
e
and B
e
are the real and imaginary parts of Y
e
.
The phase of Y
e
is
π
/2 when
θ
0
is zero. The rectangular plot of Y
e
is a spiral
as shown in Figure 12.15. Any value of
θ
0
for which the spiral ...
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Publisher Resources

ISBN: 9781466591417