STUPIDSID
1 (a)
Explain advantages of microwave and its applications. Draw neat diagram of
Microwave system.
7 M
1 (b)
Explain reflection coefficient of transmission line and standing wave. Derive expression for impedance and reflection coefficient at any point on the line.
7 M
2 (a)
Sketch rectangular and circular waveguide. Compare their dominant mode. List
advantages and disadvantages.
7 M
2 (b)
A transmission line has a characteristic impedance of 50+j 0.01 Ω and is terminated in a load impedance of 73-j 42.5 Ω Calculate: (a) the reflection coefficient; (b) the standing-wave ratio.
7 M
2 (c)
An air-filled circular waveguide has a radius of 2 cm and is to carry energy at a frequency of 10 GHz. Find all the TEnp and TMnp modes for which energy transmission is possible.
7 M
3 (a)
Explain in detail applications of Magic Tee.
7 M
3 (b)
Explain with diagram waveguide band, corners and twist with their applications.
7 M
3 (c)
Sketch different directional couplers. Define coupling factor, directivity.
7 M
3 (d)
Explain in brief Microwave Circulators and Faraday - rotation isolator.
7 M
4 (a)
Explain Working of reflex klystron. Compare it with cavity klystron.
7 M
4 (b)
Draw different slow-wave structures. Explain working of Traveling-wave tube.
7 M
4 (c)
List different types of Magnetron. Explain mechanism of oscillations of
Magnetron Oscillator with diagram.
7 M
4 (d)
Explain working principles of Tunnel Diodes with Energy-band Diagrams.
7 M
5 (a)
What is Gunn effect? Explain working of GaAs diode.
7 M
5 (b)
Define receiver noise. Explain radar range equation in terms of receiver noise
figure, bandwidth and other related parameters.
7 M
5 (c)
Draw block diagram of pulse radar and explain each block. List different types
of display used.
7 M
5 (d)
What do you mean by Doppler effect? Explain operation of MTI radar.
7 M
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