Post laboratory exercise in Microwave engineering undergraduate level
Question 1
1.
Question 2
2.
Explain the role of repeller voltage in the operation of Reflex Klystron tube.
Question 3
3.
What is difference between modulation characteristics and mode study of Reflex klystron tube?
Question 4
4.
Question 5
5.
What is meant by Electronic Tuning Range (ETR) of Reflex klystron tube?
Question 6
6.
Explain in brief how can we measure generated microwave frequency with Reflex klystron tube.
Question 7
7.
What is difference between Gunn diode and ordinary PN junction diode?
Question 8
8.
Explain what is the significance of negative resistance operation?
Question 9
9.
Question 10
10.
Explain how modulation depth is determined for PIN diode signal in the experiment of Gunn diode?
Question 11
11.
What are four important characteristics of directional couplers?
Question 12
12.
Why it is expected to have maximum values of directivity and isolation for any coupler?
Question 13
13.
How the sampling rate is decided in directional coupler?
Question 14
14.
What different directional couplers we have studied in our experiment?
Question 15
15.
What value of threshold voltage is observed for the Gunn diode in order to enter it into negative resistance region? What is typical value of exhibited negative resistance?
Reflex Klystron tube is an -
Amplifier
Resonator
Oscillator
Semiconductor
Bunching process will be initiated when -
repeller voltage is just applied
repeller voltage is only maximum
repeller voltage is only minimum
certain specific values of repeller voltages are applied
Negative resistance phenomenon is observed in following semiconductor material -