Microwave Radar Engineering (KEC074) - AKTU Question Paper 2022-23
B.Tech · Semester 7 · Free PDF Download
This is the official AKTU Microwave Radar Engineering Previous Year Question Paper for B.Tech Semester 7, academic session 2022-23. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 7
Session:2022-23
University:AKTU / UPTU
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Questions Asked in 2022-23
Microwave Radar Engineering (KEC074) — extracted question text
Section AAttempt all questions in brief. 2x10 = 20
- aExplain various losses present in waveguides
- bDefine characteristic impedance
- cDefine the term directivity and coupling factor in directional coupler
- dWrite down the different properties of s-matrix
- eWrite down the limitations of c onventional tubes at microwave frequencies
- fExplain why slow wave st ructure is used in TWTs
- gDefine the term VSWR
- hDefine the term Dielectric Constant. (i) Discuss the concept of low angle tracking used in RADAR. (j) Define the term pulse re petition frequency in radar
Section BAttempt any three of the following: 10x3 = 30
- aDerive the field distribution of TE10 mode in rectangular w aveguide. Show that TE01 and TM10 modes do not exist in rectangular waveguide
- bExplain the operation of a Faraday rotation isolator with t he help of neat sketch. List the applications of ferrite isolator
- cCompare TWT and Klystron amplifier. Explain the amplificati on process of Travelling Wave Tubes (TWT)
- dDiscuss the salient features of microwave measurements. Des cribe a voltage standing wave ratio (VSWR) meter
- eExplain with neat diagram, t he working of CW radar with non zero IF
Section CAttempt any one part of the following: 10x1 = 10
- aDerive the expression for fi eld components in TE mode for c ircular waveguide
- bTE11 wave is propagating through a circular waveguide. The waveguide is air filled and has a diameter of 12cm. Calculate c ut-off frequency (fc), guide wavelength for frequency of 2.5 GHz (λg) and wave impedance (Zg)
- aWith a schematic describe the operation of a four port circ ulator. Obtain the simplified S matrix of a perfectly matched, lossless four port circulator
- bWrite short note on: i. Phase Shifters ii. Attenuators
- aExplain the schematic diagr am, operating principle and perf ormance characteristics of Backward Wave Oscillators (BWO)
- bA Two-CavityKlystron amplifie r has the following parameters: V0 = 1000 V, R0 = 40 kilo-ohm, I0 = 25 mA, f = 3 GHz, d = 1 mm, L = 4 cm, R sh (effective shunt impedance, excluding beam loading) = 30 kilo-ohm. i. Find the input gap voltage to give maximum voltage V2. ii. Find the voltage gain, neglecting the beam loading in the outpu t cavity. iii. Find the efficiency of the amplifier, neglecting beam loading
- aWrite short note on: i) Power Meters ii) Microwave Amplifiers
- bWrite short note on: i) Measurement of Insertion Loss ii) ReturnLoss
- aDerive simple form o f radar range equation
- bA typical pulse radar waveform has T on =10µs, pulse repetition period (Tr) = 10msand peak power= 10 MW. Find: i) Duty cycle ii) Maximum unambiguous range (Run) iii) Average power (Pavg)
Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.
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