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 | June, 2016 | |
| City, State | new delhi, |
Question Paper
What is degenerate mode of operation in a waveguide?
Find out the Q-factor of a cavity resonator.
Show how power can be measured by directional couplers, using a diagram.
Write down the assumptions taken while analysing 2-cavity klystron.
Write the expression of radar range equation and define all the parameters.
2. Solve the Helmholtz equation for a rectangular co-ordinate system considering different cases. Find the solution when the waveguide operates in TEmn mode.
Write the theorems of Tee-junction and explain E-plane and H-plane Tee with corresponding S-matrix under matching conditions.
A transmission line has a characteristic impedance of 50 0·01 ohm and is terminated in a load impedance of 73 42·5 ohm. Calculate
the reflection coefficient,
the standing-wave ratio.
Explain the frequency limitations on different parameters of a microwave transistor.
Calculate the maximum allowable power for a transistor having the following parameters:
Reactance 1 ohm, Transit time cut-off frequency 4 GHz, Maximum electric field 1·6 x 10^5 Saturation drift velocity x 10^5 cm/sec.
Explain the working of a Tunnel diode with its V characteristics.
Explain the limitations of conventional active devices at microwave frequency.
Explain the operation of an IMPATr diode by drawing its structure.
Compute the maximum CW output power and resonant frequency of an IMPATT diode having the following parameters:
Carrier drift velocity x 10^7 cm/sec, Drift region length um., Maximum operating voltage 100 Maximum operating current 200 mA, Efficiency 15% and Breakdown voltage= 90 V.
Explain the operation of CW Radar with a necessary block diagram. How is isolation between a transmitter and a receiver done? Give an example.
Differentiate between Pulse and CW Radar.
Derive the noise figure dependent Radar range equation.
What do you mean by Radar Clutter?
9. Write short notes on any two of the following:
Microwave Circulator
Gunn Diode
TWT
Radar Duplexer
Find out the Q-factor of a cavity resonator.
Show how power can be measured by directional couplers, using a diagram.
Write down the assumptions taken while analysing 2-cavity klystron.
Write the expression of radar range equation and define all the parameters.
2. Solve the Helmholtz equation for a rectangular co-ordinate system considering different cases. Find the solution when the waveguide operates in TEmn mode.
Write the theorems of Tee-junction and explain E-plane and H-plane Tee with corresponding S-matrix under matching conditions.
A transmission line has a characteristic impedance of 50 0·01 ohm and is terminated in a load impedance of 73 42·5 ohm. Calculate
the reflection coefficient,
the standing-wave ratio.
Explain the frequency limitations on different parameters of a microwave transistor.
Calculate the maximum allowable power for a transistor having the following parameters:
Reactance 1 ohm, Transit time cut-off frequency 4 GHz, Maximum electric field 1·6 x 10^5 Saturation drift velocity x 10^5 cm/sec.
Explain the working of a Tunnel diode with its V characteristics.
Explain the limitations of conventional active devices at microwave frequency.
Explain the operation of an IMPATr diode by drawing its structure.
Compute the maximum CW output power and resonant frequency of an IMPATT diode having the following parameters:
Carrier drift velocity x 10^7 cm/sec, Drift region length um., Maximum operating voltage 100 Maximum operating current 200 mA, Efficiency 15% and Breakdown voltage= 90 V.
Explain the operation of CW Radar with a necessary block diagram. How is isolation between a transmitter and a receiver done? Give an example.
Differentiate between Pulse and CW Radar.
Derive the noise figure dependent Radar range equation.
What do you mean by Radar Clutter?
9. Write short notes on any two of the following:
Microwave Circulator
Gunn Diode
TWT
Radar Duplexer
Other Question Papers
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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