B.TechSemester 62022-23Antenna And Wave PropagationKEC-603

Antenna And Wave Propagation (KEC-603) - AKTU Question Paper 2022-23

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Antenna And Wave Propagation Previous Year Question Paper for B.Tech Semester 6, 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 6

Session:2022-23

University:AKTU / UPTU

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Questions Asked in 2022-23

Antenna And Wave Propagation (KEC-603) — complete question paper

Section AAttempt all questions in brief. 2 x 10 = 20

a
Evaluate points (0, -4, 3) into cylindrical and sp herical coordinate system
b
Illustrate the gradient of a vector in cylindrical coordinate system
c
Illustrate Maxwell’s equation for electric field
d
Discuss equation of continuity and its application
e
Describe the Beam Area of an Antenna and give the formula
f
Define gain and directivity of an antenna
g
Define radiation resistance of Antenna
h
Illustrate long wire antenna. i. Evaluate the maximum range of a tropospheric trans mission for which the transmitting antenna height is 100ft and receiving antenna height is 50 ft. j. Evaluate the maximum electron concentration of the D layer and E layer has critical frequencies 2.5MHz and 8.4MHz respectively

Section BAttempt any three of the following: 10x3=30

a
Evaluate vector A= ρzsin ϕaρ+ 3 ρcos ϕaϕ+ρsin ϕcos ϕ azinto Cartesian coordinate system
b
Demonstrate boundary conditions for electric fie ld intensity and electric flux density for various types of medium
c
An antenna has a field pattern given by E( θ)= Cos 2θ for 0 o≤θ≤ 90 o. Evaluate the i. HPBW ii. FNBW iii. Beam Area iv. Draw the pattern showing HPBW and FNBW
d
Demonstrate vertical antenna and folded dipole antennas
e
Demonstrate critical frequency, multihop propaga tion and skip distance for sky wave propagation

Section CAttempt any one part of the following: 10x1=10

a
Illustrate differential length, area and volume in Cartesian coordinates and cylindrical coordinates system with neat sketch
b
Evaluate divergence for P= yz ax + 4xy ay + y az at point (1, -2, 3).Also evaluate curl for the same and compare results
a
Design a 3 elements yagi-uda Antenna. Demonstrat e the length of elements and the distances between them
b
Evaluate electric filed intensity on a point P d ue to semi-infinite line
a
Illustrate effective aperture and effective height of an antenna. Also discuss antenna temperature
b
Design a radio communication link for directiona l antennas. Evaluate the power delivered to the receiver if a radio link has a 15W transmitter connected to an antenna of 1.5m 2 at 3 GHz. The receiving antenna has an effective a perture of 0.5m 2and is located at a 15km line of sight distance fro m the transmitting antenna. Assuming lossless, matched antennas
a
Evaluate electric field due to array of two λ/2 driven element when current of equal amplitude and same phase is flowing in antennas
b
Derive expression of electric field due to short dipole
a
Derive equation for maximum usable frequency for both flat and curved earth condition
b
Demonstrate ground wave propagation and space wa ve propagation

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

Repeated Questions — KEC-603

Questions that appeared in more than one session, found by comparing 3 years of Antenna And Wave Propagation papers (2021-22, 2022-23, 2023-24)

Illustrate the gradient of a vector in cylindrical coordinate system