B.TECH - Semester 6 antenna and wave propagation Question Paper 2013 (apr)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Define the term effective aperture of antenna.
- What is duality w.r.t. antenna?
- Explain "conjugate matching" principle.
- Explain the term radiation resistance of an antenna.
- What is the peculiarity of antennas using in mobile handsets?
- What is beam steering?
- What is a uniform linear array?
- Give any three features of a rhombic antenna.
- What is skip distance?
- Define the term virtual height. ( $10 \times 2=20$ Marks) P.T.O. Answer any one questions from each Module．Each question carries 20 marks． 11．（a）Find the maximum effective area of an antenna at a frequency 3 GHz when the directivity is 100. （b）What...
- (a) Explain the working principle of parabolic dish antenna.
- (b) Design a horn antenna to give a HPBW of $40^{\circ}$ at both E and H planes at a frequency of 9 GHz . The horn has to be mounted on a $X$ band wave guide. Let $\ominus_{F}$ be $18^{\circ}$. Find out its gain.
- (a) Derive the expression for effective radius of earth.
- (b) Explain the different diversity techniques.
- (a) Describe the characteristics of ionized regions.
- (b) What is LOS distance? What is its significance? $$ (4 \times 20=80 \text { Marks }) $$