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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
523Microwave Diodes
In these gures C
j
is the junction capacitance, R
s
is series resistance and R
p
is the parallel resistance. This R
p
is the equivalent resistance of generation-
recombination current, diffusion current and surface leakage current. With
the increase in reverse bias voltage both C
j
and R
s
decrease but R
p
increases.
The efciency of a varactor diode is expressed in terms of its quality factor Q.
Its maximum value of Q is given by
Q
R
R
p
s
max
/
=
4
1 2
(13.3)
13.4.6.3 Applications
Varactor diodes are used in harmonic generation, voltage variable tuning,
mixing, detection and modulation of microwave signals, active lters and
para
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Publisher Resources

ISBN: 9781466591417