Exam Details
| Subject | Microwave And Radar Engineering | |
| Paper | ||
| Exam / Course | BTCVI / BTECVI / BTELVI | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
What is the dominant mode of operation in a waveguide? Explain with an example. Plot and briefly explain the graph between coupling coefficient and standing wave ratio. How can the characteristic impedance and propagation constant of a transmission line be measured Differentiate between CW and Pulse Radar. Briefly explain the Doppler effect in Radar operation.
2.(a) Solve the Helmholtz equation for a rectangular coordinate system considering different cases. Find the solution when the waveguide operates in TMmn mode. What is circular waveguide? Explain.
3.(a) Explain the principle of microwave
resonator and find out the frequency in
case of a semi-circular cavity resonator.
Explain about the waveguide corners, bends and twists and their usage in a transmission line.
4.(a) Explain the basic principle of a two-hole
directional coupler along with its S-matrix.
A symmetric directional coupler with infinite directivity and a forward attenuation of 20 dB is used to monitor the power delivered to a load Zl. Bolometer 1 introduces a VSWR of 2·0 on arm bolometer 2 is matched to arm 3. If bolometer 1 reads 8 mW and bolometer 2 reads 2 mW, find the amount of power dissipated in the load Zl, and the VSWR on arm <img src='./qimages/8827-4b.jpg'> Explain two-cavity klystron amplifier with necessary block. diagram and write down the equation of velocity modulation.
Explain the basic principle of a Tunnel diode with V characteristic.
6.(a) Explain the operation of a TRAPATT diode by drawing its structure. Calculate the avalanche zone velocity of a TRAPATT diode having the following parameters
Doping Concentration: 2 x 10^15
Current Density: 20 kA/cm^2
7.(a) Explain the operation of Pulse Radar with necessary block diagram. Mention how a Delay line canceller can act as a filter.
Discuss the operation of Frequency Modulated CW Radar by drawing its block diagram.
8. Explain the operation of MT Radar having power-amplifier transmitter with block diagram.
9. Write short notes on any two of the following
Microwave Isolator
PIN Diode Radar Displays
Tracking Radar
2.(a) Solve the Helmholtz equation for a rectangular coordinate system considering different cases. Find the solution when the waveguide operates in TMmn mode. What is circular waveguide? Explain.
3.(a) Explain the principle of microwave
resonator and find out the frequency in
case of a semi-circular cavity resonator.
Explain about the waveguide corners, bends and twists and their usage in a transmission line.
4.(a) Explain the basic principle of a two-hole
directional coupler along with its S-matrix.
A symmetric directional coupler with infinite directivity and a forward attenuation of 20 dB is used to monitor the power delivered to a load Zl. Bolometer 1 introduces a VSWR of 2·0 on arm bolometer 2 is matched to arm 3. If bolometer 1 reads 8 mW and bolometer 2 reads 2 mW, find the amount of power dissipated in the load Zl, and the VSWR on arm <img src='./qimages/8827-4b.jpg'> Explain two-cavity klystron amplifier with necessary block. diagram and write down the equation of velocity modulation.
Explain the basic principle of a Tunnel diode with V characteristic.
6.(a) Explain the operation of a TRAPATT diode by drawing its structure. Calculate the avalanche zone velocity of a TRAPATT diode having the following parameters
Doping Concentration: 2 x 10^15
Current Density: 20 kA/cm^2
7.(a) Explain the operation of Pulse Radar with necessary block diagram. Mention how a Delay line canceller can act as a filter.
Discuss the operation of Frequency Modulated CW Radar by drawing its block diagram.
8. Explain the operation of MT Radar having power-amplifier transmitter with block diagram.
9. Write short notes on any two of the following
Microwave Isolator
PIN Diode Radar Displays
Tracking Radar
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
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Subjects
- Advance Microprocessor And Architecture
- Analog and Mixed Mode VLSI Design
- Analog Communication
- Analog Electronic Circuits
- Analog Integrated Circuits Design
- Antennas and Propagation
- B10-Informatics
- Basics Of Electronics Engineering
- Computer Architecture
- Computer Communication Networks
- Control Engineering
- Data Communication And Network
- Device Modelling For Circuit Simulation
- Digital Electronics
- Digital Signal Processing
- Digital System Design
- Electromagnetic Field Theory
- Electronic Measurement and Inst
- Electronic Switching Circuits
- Embedded System Design
- Information Theory And Coding
- Linear Integrated Circuits
- Microcontrollers
- Microprocessor And Its Applications
- Microwave And Radar Engineering
- Multirate Systems
- Optical Fiber Communication
- Power Electronics
- Satellite And Tv Engineering
- Signal And Systems
- Wireless Communication