Anna University, Chennai Nov/Dec 2012 Examinations

Rejinpaul.com Important Questions

EC2403 RF and microwave engineering

VII Sem ECE

Unit I-V

1.
A shunt impedance Z is connected across a transmission line with
characteristic impedance Z

_{o}.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