DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LONERE
Winter Examination – 2022
Course: B. Tech.
Branch : ECE(Sandwich)
Semester :VII
Subject Code & Name: [BTEXC701] Microwave Engineering
Max Marks: 60
Date: 27-01-2023
Duration: 3 Hours
Instructions to the Students:
1. All the questions are compulsory.
2. The level of question/expected answer as per OBE or the Course Outcome (CO) on
which the question is based is mentioned in ( ) in front of the question.
3. Use of non-programmable scientific calculators is allowed.
4. Assume suitable data wherever necessary and mention it clearly.
(Level/CO) Marks
Q. 1 Solve Any Two of the following.
A) A load impedance of 40 + j70 ohm terminates a 100 ohm transmission
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line that is 0.3λ long. Using Smith chart find the reflection coefficient at
the load, the reflection coefficient at the input to the line, the input
impedance, the standing wave ratio on the line, and the return loss.
B) A 100 m long lossless transmission line has a total inductance and
capacitance of 100 μH and 10 nF, respectively. Determine the velocity of
propagation, phase constant and characteristic impedance of the
transmission line at the operating frequency of 100 KHz.
C) Define the following terms in transmission lines.
1. Return loss
2. Reflection coefficient
3. VSWR
4. Characteristics impedance
Q.2 Solve Any Two of the following.
A) The [S] matrix of a two-port network is given below:
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B) Explain Z Parameters.
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C) Differentiate between E-plane Tee with H-plane Tee
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(a) Determine whether the network is reciprocal or lossless.
(b) If a short circuit is placed at port 2, what will be the resulting return
loss at port 1?
Q. 3 Solve Any Two of the following.
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A) Draw and explain the Applegate diagram of a two-cavity klystron.
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B) Explain the Construction of Reflex Klystron with a sketch.
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C) Explain operation of the Magnetron.
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Q.4 Solve Any Two of the following.
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A) Explain the following:
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B) Explain the Measurement of Q of a Cavity Resonator.
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C) Explain the impedance Measurement.
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i.
Power meter
ii.
VSWR meter
Q. 5 Solve Any Two of the following.
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A) Explain Striplines with a sketch.
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B) Explain Hazards of Electromagnetic Radiation.
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C) Explain Microstrip lines with a sketch.
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