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Engineering BE Electronics and Telecommunication Sem 7 December 2018 2018 Microwave And Radar Engineering Question Paper - Mumbai University | munotes

December 2018 Question Paper.pdf
EXTC · 173 KB · 1 May 2025

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Questions asked in this paper

  1. Q1 (A) Write a short note on TRAPATT. 5 marks
    • (B) Write a short note on high electron mobility transistors. 5
    • (C) Match a load impedance to a 50 line using a double stub tuner. The stubs are open circuited and are spaced apart. The match frequency is 2 GHz 10
  2. Q2 (A) With a neat functional diagram explain the working principle of Cylindrical 10 marks
    • (B) Derive equation for phase velocity, cutoff frequency, cutoff wavelength and field equations for rectangular waveguide 10
  3. Q3 Explain any one bio-medical application using microwave. 10 marks
    • (B) Explain the working of a negative resistance parametric amplifier. 10
  4. Q4 (A) What is the importance of beam coupling coefficient? Derive the equation of velocity modulation in klystron 10 marks
    • (B) Given the circuit shown in Fig. 4(B), design a lumped element matching network at 60 MHz that would transform Load impedance = 100 - j25 Q into an input impedance of Z= j15 Q. Take Zp = 10
    • (A) What is meant by RADAR range? Derive the equation for Radar range in terms of the noise figure 10
    • (B) operating at 1.5 GHz uses a peak pulse power of 2.5 MW and has a range of 100 nmi for objects whose radar cross section is 1 m? If the minimum receivable power of the receiver is Watt, what is the smallest diameter of the antenna reflector could have assuming it to be a full paraboloid with 10
  5. Q6 Write a short note on following:
    • (A) diode. 7
    • (B) Hybrid Ring. 7

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