Electronics and Communication Engineering - Microwave Communication - Discussion
Discussion Forum : Microwave Communication - Section 1 (Q.No. 24)
24.
Impedance level of Impatt diodes is generally lower than that of Gunn diodes
Answer: Option
Explanation:
An Impatt diode has n+ - p - i - p + structure and is used with reverse bias.
It exhibits negative resistance and operates on the principle of avalanche breakdown.
Impatt diode circuits are classified as broadly tunable circuit, low Q circuit and high Q circuit.
The impedance of Impatt diode is a few ohms. The word Impatt stands for Impact Avalanche Transit Time diode.
The features of Impatt diode oscillator are : frequency 1 to 300 GHz, Power output (0.5 W to 5 W for single diode circuit and upto 40 W for combination of several diodes), efficiency about 20%.
Its applications include police radar systems, low power microwave transmitter etc.
Discussion:
Be the first person to comment on this question !
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers