Explain the principle of Pattern multiplication. List the different methods used for measuring the Polarization. Write short notes on Structure of Ionosphere layers 9. Derive an expression for the far field component of a half wave dipole of an antenna. What is collinear array?ĭefine radiation resistance and write down the expression for wc2353. 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. List the applications of Helical antenna. EC Antenna and Wave Propagation Lecture Notes – NPR Edition Explain the array of N- sources of equal amplitude and spacing- End fire case i Direction of pattern maxima ii. How much current does an antenna draw when radiating W and is having a fc2353 resistance of Ohms.Įxplain the principle of traveling wave radiator.ĭirection of pattern minima ii. Explain the special features of various types of Horn antennas and frequency independent antennas. With a suitable diagram, discuss the construction and operation of a Yagi antenna. 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. ECE lecturer Notes » EC Antenna and Wave Propagation Lecture Notes An antenna has a radiation resistance of 72 Ohms, a loss resistance of 8 Ohms and a power gain of 12dB. Define power gain and write down the relation between directive gain and power gain. Explain Virtual Height and derive the Expression 7. Distinguish between sectorial and pyramidal Horn antenna. Department: ECE Subject Code: EC Subject Name: Antenna and Wave Propagation Type: Lecture Notes Edition Details: NPR Edition.ĭerive an expression to determine the Directivity of an antenna. NOTES: (1) When thedirection is not stated, the power gain is usually taken to be thepower gain in the direction of its maximum value. Class lecture notes for third Year,sixth semester Antennas & Wave Propagation ( Subject Code: EC) is available here in PDF,DOC.
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