EC2403 RF and microwave engineering Anna University Nov/Dec 2012 Important Questions

Anna University, Chennai Nov/Dec 2012 Examinations Important Questions
EC2403 RF and microwave engineering
Unit I-V
1.     A shunt impedance Z is connected across a transmission line with characteristic impedance Zo .Find the s matrix of the junction
2.     Explain in detail about properties of S parameters
3.     Explain about the operation ,characteristics and application of BJT’s at microwave frequency
4.     What are transmission matrices?explain them and obtain their relationship s matrix
5.     Expalin about microstripline matching networks with a neat diagram
6.     Discuss the consideration for an RF amplifier design
7.      Derive the reflection coefficients of simultaneous conjugate method for a bilateral design
8.     Describe the frequency response of impedance matching networks used in an RF amplifier
9.     Derive the reflection coefficients of simultaneous conjugate method for a bilateral design
10.Derive the S-matrix of a lossless, ideal magic tee
11. Describe the principle of microwave transmission through ferrite .Explain how a gyrator is designed based on this effect
12.Describe the operation of a Isolator
13. Derive the s matrix of an ideal Phase shifter and discuss its operation
14.Derive the Manley Rowe power relation. Show how it can be applied to find the gain of up converter and down converter
15. Explain the construction and DC operating principle of IMPATT diode
16.Describe the principal of operation, the cases of input resistance at signal frequency and the circuit performance of parametric amplifier
17. Explain in detail with suitable diagrams the fabrication techniques of a monolithic microwave integrated  circuit
18.Explain the working of Reflex Klystron , while doing so, explain the concept of velocity and current modulations
19.Explain the operation of  2-cavity klystron amplifier and compare it with TWT
20.           Draw the block diagram for the slotted line method of VSWR measurement and discuss
21.Explain a method for high power measurement