# B.TECH 5th sem Microwaves and Radar paper 2016

UniversityVTU, Belgaum, Karnataka
CourseB.TECH
Semester5
SubjectMicrowaves and Radar
Year2016
Downloads0
Uploaded By ###### Heman Sharma
100

 Question Marks 0 requests a. Starting from fundamental, derive the expression for the voltage and current at any point on the transmission line. This question has 0 answers so far. 8 0 requests b. A transmission line has the following primary constants, R = 10.4 L = 0.00367 H/km, G=0.8 x 10-6 /km, C =0.00835 F/km. Find and zo. This question has 0 answers so far. 6 0 requests c. Define and derive expression for reflection coefficient and transmission coefficient for a transmission line.  This question has 0 answers so far. 6 0 requests a. A load of ZR-115-1752 terminates at a lossless 1000 line. Use Smith chart to determine:(i) SWR, (ii) I/P impedance of a 0.2 long line, (ii) the distance from load to first voltage maximum.  This question has 0 answers so far. 8 0 requests b. With neat diagram, explain Faraday's rotation isolator. This question has 0 answers so far. 5 0 requests c. With diagram, explain working of two hole direction coupler and also derive s-matrix for the same.  This question has 0 answers so far. 7 0 requests a. Explain with a neat diagram the construction and working of PIN diode and Schottkey barrier diode.  This question has 0 answers so far. 10 0 requests b. An M-SI-M BARITT diode has the following parameter:i) Relative dielectric constant of silicon gr = 11.8 ii) Donor concentration, N = 2.8 x 1021/m iii) Silicon length, L =6 Determine the breakdown voltage and the breakdown electric field. This question has 0 answers so far. 5 0 requests c. What is Gunn'effect? Explain with constructional details of a Gunn diode. This question has 0 answers so far. 5 0 requests b. State and explain properties of S-parameters. This question has 0 answers so far. 6 0 requests c. Two transmission lines of characteristic impedance z1 and Z2 are joined at plane     pp1.Express s-parameter in terms of impedance. This question has 0 answers so far. 8 0 requests a. With neat diagram, explain the working of rotary precision phase shifter.  This question has 0 answers so far. 10 0 requests b. Explain H-plane Tee junction and derive the S-matrix also. This question has 0 answers so far. 6 0 requests c. A 20 MW signal is fed into one of collinear port 1 of a lossless H-plane T-junction.Calculate power delivered through each port when other ports are terminated in matched load.  This question has 0 answers so far. 4.5 0 requests 4. Explain the various losses taking place in microstriplines, This question has 0 answers so far. 7 0 requests b. Explain the construction and field pattern for microstripline. This question has 0 answers so far. 8 0 requests c. Compare stripline and microstripline. This question has 0 answers so far. 5 0 requests a. Derive Radar range equation in terms of effective aperture, radar cross section of target and minimum detectable signal power of receivers. This question has 0 answers so far. 8 0 requests b. Discuss various application of Radar. This question has 0 answers so far. 6 0 requests c. With respect to Radar system, explain:i) Maximum unambiguous Range This question has 0 answers so far. 1.5 0 requests With respect to Radar system, explain:ii) Clutter attenuationc. This question has 0 answers so far. 1.5 0 requests With respect to Radar system, explain:iii) Improvement factor This question has 0 answers so far. 1.5 0 requests With respect to Radar system, explain:iv) Doppler shift This question has 0 answers so far. 1.5 0 requests a. Explain MTI Radar with neat block diagram  This question has 0 answers so far. 10 0 requests Write short notes on ii) C.W. Doppler Radarb. This question has 0 answers so far. 5 0 requests Write short notes on iii) Pulsed Radar This question has 0 answers so far. 5 0 requests Write short notes on iv) Blind speed This question has 0 answers so far. 10 0 requests b. Write short notes on any two:i) Delay line canceller   This question has 0 answers so far. 5 0 requests Derive the following loss in a microwave network in terms of S-parameter:i) Insertion loss This question has 0 answers so far. 1.5 0 requests Derive the following loss in a microwave network in terms of S-parameter:ii) Transmission loss This question has 0 answers so far. 1.5 0 requests Derive the following loss in a microwave network in terms of S-parameter:iii) Reflection loss This question has 0 answers so far. 1.5 0 requests Derive the following loss in a microwave network in terms of S-parameter:iv) Return loss This question has 0 answers so far. 1.5
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