26-06-2012, 12:56 PM
TRAPATT DIODE
TRAPATT DIODE.pptx (Size: 759.77 KB / Downloads: 61)
TRAPATT is a high frequency Microwave Generator capable of operating from several hundred MHz to several GHz.
High peak power diodes are typically p+-n-n+ structure with n-type depletion region width varying from 2.5 to 12.5 um.
The p+ region is kept as thin as possible from 2.5 to 7.5 um.
Where NA is the doping concentration of the n region and x is the distance.
The value of t at which the electric field reaches Em at a given distance x into the depletion region is obtained by setting E(x,t) = Em.
Specifications :
● CW Power : 1-3 W between 8 GHz to 0.5 GHz
● Pulse Power : 1.2 kW at 1.1 GHz
● Operating Voltage : 60-150 V
● Efficiency : 15 to 40%
● Noise figure : > 30 dB
● Frequency : 3 to 50 GHz