Class lecture notes for third Year,sixth semester Antennas & Wave Propagation ( Subject Code: EC) is available here in PDF,DOC. NOTES: (1) When thedirection is not stated, the power gain is usually taken to be thepower gain in the direction of its maximum value. (2) Power gain does not. Department: ECE Subject Code: EC Subject Name: Antenna and Wave Propagation Type: Lecture Notes Edition Details: NPR Edition.
Derive an expression to determine the Directivity of an antenna. Distinguish between sectorial and pyramidal Horn antenna. Explain Virtual Height and derive the Expression 7. Define power gain and write down the relation between directive gain and power gain. An antenna has a radiation resistance of 72 Ohms, a loss resistance of 8 Ohms and a power gain of 12dB.
Write short notes on F region Write short notes on Sporadic E region Calculate the radiation resistance of an antenna notfs is radiating W and drawing current of 5A. With a suitable diagram, discuss the construction and operation of a Yagi antenna. Explain the special features of various types of Horn antennas and frequency independent antennas. How much current does an antenna draw when radiating W and is having a fc2353 resistance of Ohms.
Direction of pattern minima ii. Explain the array of N- sources of equal amplitude and spacing- End fire case i Direction of pattern maxima ii.
EC Antenna and Wave Propagation Lecture Notes – NPR Edition
List the applications of Helical antenna. What is cheese feed as applicable to parabolic reflectors? How the secondary lobes are eliminated? Give the reason for poor radiation of a loop antenna. What is collinear array?
Define radiation resistance and write down the expression for wc2353. Derive an expression for the far field component of a half wave dipole of an antenna. Write short notes on Structure of Ionosphere layers 9. List the different methods used for measuring the Polarization. Explain the principle of Pattern multiplication.
antennas and wave propagation subject code: ec2353
Define Vertical Incidence measurement. Product Data Sheet – Panorama Antennas.
Define Beam width of antenna. Distinguish between standing wave antenna and TWA? Write short notes on various forms of arrays i. Write short notes on Normal E region Explain Ground Wave Propagation in detail 3.
What do you mean by Sky Wave Propagation 5. Explain the principle of operation and applications of loop antenna. Calculate a maximum effective aperture of a half wave dipole. What do you mean by ground Wave Propagation 4. Write detailed notes noyes a Horn antennas b Frequency independent antennas.
Ed2353 the radiation and Induction field component for a small current element. What is primary radiation and secondary radiation as applicable to parabolic reflector? Describe the Slotted line technique for Impedance measurement. Broad side array ii. Direction of pattern maxima ii. Draw the structure of an Helical antenna with its parameters. Write the ranges for various layers of atmosphere.