Download PTU B.Tech 2020 March ECE 5th Sem EC 303 Antenna & Wave Propagation Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech ECE (Electronics And Communications Engineering) 2020 March 5th Sem EC 303 Antenna & Wave Propagation Previous Question Paper

1 | M- (S2)-2742
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (ECE) (Sem.?5)
ANTENNA & WAVE PROPAGATION
Subject Code : EC-303
M.Code : 57520
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Write briefly :
a. Explain FNBW of an antenna.
b. Explain beam area of an antenna.
c. Explain input impedance of an antenna.
d. Explain effective aperture area of an antenna.
e. Describe the refractive index of ionosphere.
f. Define the critical frequency in ionospheric propagation.
g. Define array factor.
h. What is the broadside array?
i. Explain the physical concept of radiation in single wire.
j. What is skip distance in ionospheric propagation?


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1 | M- (S2)-2742
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (ECE) (Sem.?5)
ANTENNA & WAVE PROPAGATION
Subject Code : EC-303
M.Code : 57520
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Write briefly :
a. Explain FNBW of an antenna.
b. Explain beam area of an antenna.
c. Explain input impedance of an antenna.
d. Explain effective aperture area of an antenna.
e. Describe the refractive index of ionosphere.
f. Define the critical frequency in ionospheric propagation.
g. Define array factor.
h. What is the broadside array?
i. Explain the physical concept of radiation in single wire.
j. What is skip distance in ionospheric propagation?


2 | M- (S2)-2742
SECTION-B
2. Explain infinitesimal dipole antenna in detail.
3. How mutual coupling between the antennas in an array affect the desired reception of the
array? Explain this by considering an array of two antennas.
4. Explain field equivalence principle.
5. Differentiate between the far-field, radiating near field and reactive near-field generated
by linear antenna.
6. Explain the process and difficulties arise in propagation of radio waves through
ionosphere.

SECTION-C
7. Explain radiation pattern, HPBW, directivity, efficiency and gain of an antenna.
8. Explain the working of E-plane sectoral horn antenna.
9. Describe the operation of parabolic reflector antenna with the help of suitable diagram.








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page of Answer Sheet will lead to UMC against the Student.

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