Question Paper: RF Modelling and Antennas Question Paper - December 2016 - Electronics and Telecom Engineering (Semester 5) - Mumbai University (MU)

RF Modelling and Antennas - December 2016

MU Electronics and Telecom Engineering (Semester 5)

Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary
1(a) Compare Binomial filter and chebyshev filter. 5 marks

1(b) Comapare Broadside and Endfire array. 5 marks

1(c) Find the gain of an Antenna when physical aperature is 52 at 2GHz with efficiency 70%. 5 marks

1(d) Comapare monopole, Dipole and folded dipole antenna. 5 marks

2(a) Design a composit high pass filter by image parameter method with the following specification.
R0 75Ω fc=50MHz,
5 marks

2(b) Derive rediation resistance of small dipole. Explain its significance. 5 marks

3(a) Derive Friss transmission formula state its significance in wireless communication. What is maximum power received at a distance of 0.75km over free space for 1Ghz frequency. The system consist of transmitting antenne with 3dB gain and receiving antenna with 17dB gain antenna is fed with 200 W power. 5 marks

3(b) Explain the structure and functioning of Yagi Uda antenna. 5 marks

4(a) Find the radiation pattern for an array of 4 elements fed with same amplitude and opposite phase. Find its HPBW and BWFN. 5 marks

4(b) Draw the structure of microstrip antenna. Discuss its characteristics, limitations and applications. 5 marks

5(a) Describe parabolic reflector antenna and its different feeding methods. 5 marks

5(b) Explain important features of loop antenna. Discuss use of loop antenna in radio direction finding. 5 marks

Write short notes on: Q6(a,b,c,d)

6(a) Rf field effect transistor 5 marks

6(a) RF behavior of capacitor and inductor 5 marks

6(b) Binomial array 5 marks

6(d) Helical antenna 5 marks

written 9 months ago by gravatar for aniketbab1 aniketbab10
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