Download GTU BE/B.Tech 2019 Summer 6th Sem Old 161003 Antenna And Wave Propagation Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem Old 161003 Antenna And Wave Propagation Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(OLD) ? EXAMINATION ? SUMMER 2019
Subject Code:161003 Date:10/05/2019
Subject Name: Antenna & Wave Propagation
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Define (i) Directivity (ii) FNBW (iv) Radiation Resistance
(v) Gain
07
(b) Give different definitions of antenna & also list out important functions of
antenna.
07

Q.2 (a) Derive the formula of radiation resistance for dipole antenna. 07
(b) Write a short note on Antenna Radiation Pattern with necessary figure. 07
OR
(b) What is Hertzian dipole? Write the relation between a current element and an
electric dipole writing suitable expressions.
07

Q.3 (a) Derive Friss Transmission Formula for radio link communication. 07
(b) Derive the Expressions of Maxima, Minima and Half power points for Broad
Side Array.
07
OR
Q.3 (a) Explain Pattern Multiplication. 07
(b) Explain antenna polarization in brief. 07

Q.4 (a) Explain loop antenna of different shapes. 07
(b) What do you mean by Antenna Synthesis? Explain Schelkunoff theorem in brief. 07
OR
Q.4 (a) Explain helical antenna in detail. 07
(b) What is meant by resonant and non-resonant antenna? 07

Q.5 (a) Discuss feed Methods of Microstrip Patch antenna. 07
(b) Explain different types of Reflector antennas. 07
OR

Q.5 (a) Explain Ground Wave Propagation in Detail. 07
(b) Explain (i) Skip Distance (ii) Critical Frequency (iii) MUF 07

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