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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
538 Microwave Engineering
13.5.5.2 Current Fluctuations
The uctuation of current is shown in Figure 13.30. This current waveform
was produced by applying a voltage pulse of 16 V amplitude and 10 ns dura-
tion to a specimen of n-type GaAs, 2.5 cm in length. Oscillation frequency
was 4.5 GHz. Lower trace had 2 ns/cm in the horizontal axis and 0.23 A/cm
in the vertical axis. Gunn found that the period of these oscillations was equal
to the transit time of electrons through the specimen, calculated from the
threshold current. Gunn also discovered that threshold electric eld E
th
varies
with length and type of material.
13.5.6 LSA Diode
As discuss
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Publisher Resources

ISBN: 9781466591417