B.TechSemester 62023-24Antenna And Wave PropagationKEC603

Antenna And Wave Propagation (KEC603) - AKTU Question Paper 2023-24

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 2023-24. 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:2023-24

University:AKTU / UPTU

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Questions Asked in 2023-24

Antenna And Wave Propagation (KEC603) — complete question paper · 100 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 10 = 20

a
Illustrate the gradient of a vect or in cylindrical coordinate system. 02
b
Define irrotational fields 02
c
Discuss electric field intensity. 02
d
Illustrate Maxwell’s equation for electric field. 02
e
Discuss solid angle and beam area 02
f
Describe the Beam Area of an A ntenna and give the formula. 02
g
Examine the major advantag e of folded dipole antenna. 02
h
Evaluate the maximum range of a tropospheric transmission for which the transmitting antenna height is 100ft and receiving antenna height is 50 ft. i. Determine critical frequency for reflection at vertical incidence if the maximum value of electron density is 1.24*10-6cm-3? j. Evaluate the maximum electron c oncentration of the D layer and E layer has critical frequencies 2.5MHz and 8.4MHz respectively

Section BAttempt any three o f t h e f o l l o w i n g : 3 x 10 = 30

a
Evaluate vector A= ρzsinϕaρ+ 3ρcosϕaϕ+ρsinϕcosϕ azinto Carte sian coordinate system
b
Demonstrate the magnetic f ield due to a finite line conductor having current I. 10
c
Derive antenna temperature a nd its relationship with the signal to noise ratio (SNR) of the given antenna
d
Demonstrate vertical ante nna and folded dipole antennas 10
e
Demonstrate critical fre quency, multihop propagation and skip distance for sky wave propagation

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 1 x 10 = 10

a
Define a differential length element in vector calculus and explain its significance
b
Evaluate divergence for P= yzax + 4xyay + yaz at point (1, -2, 3). Also evaluate curl for the same and compare results
a
A circular ring of radius 𝑎 carries a uniform charge ρL C/m and is placed on the xy-plane with axis the same as the z-axis. Demonstrate: (a) The electric field due to this ring at a height h along its axis. (b) What value of h gives the maximum value of electric field? If the total charge on the ring is 𝑄. Find electric as radius of the ring tends to zero?
b
Design a 3 elements yagi-uda A ntenna. Demonstrate the length of elements and the distances between them
a
Explain fields from oscillati ng dipoles. Describe directivity of an antenna and find the relationship between directivity and gain of antenna
b
Illustrate effective aperture and effective height of an antenna. Also discuss antenna temperature
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
Demonstrate the fields of a short dipole. 10
a
Illustrate the skip distance f or region between transmitter and receiver using sky wave propagation, when curvature of earth is taken into consideration
b
Derive equation for maximum us able frequency for both flat and curved earth condition

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 — KEC603

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 vect or in cylindrical coordinate system. 02