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Anna University
Question Paper Code : 5141
B.E./B.Tech: DEGREE Examination, MAY/JUNE 2014
Seventh Semester
Electronics and Communication Engineering
EC 2403 / EC 73/10144 EC 703 - RF AND MICROWAVE ENGINEERING
(Regulation 2008/2019)
(Common to PTEC 2403 – RF. and Microwave Engineering for B.E. (Part-Time) Sixth Semester Electronics and Communication Engineering — Regulation 2009)
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PART A — (10 x 2 = 29 marks)
1. List any four. reasons for the wide use of RF.
2. Give the relationship between [s] and [z].
3. Define Stability.
4. What are the needs for impedance matching networks?
5. What are the factors that reduce the efficiency Of IMPATT diode?
6. What is negative resistance in Gunn diode?
7. What are matched terminators?
8. What are ferriteS? Why is it. needed.in circulators?
9. What are the errors in impedance measurement?
10. Define Convection current of TINT.
PART B x 16 = 80 marks)
11. (a) With the help of S matrix concept prove the following properties.
(i) Symmetry
(ii) Unity
(iii) Zero and
(iv) Phase .shift
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