Ankush Sharma
Regd. No. 10804571
Roll no. RB6803A16
Electronics Department, Lovely Professional University
Chehru (Punjab)
Abstract— the project is enlightening us about the characteristics and properties of electromagnetic wave .It also include radar, how does it works, its components and application of EM Wave in radar.
1. Electromagnetic Waves
Electromagnetic waves are composed of oscillating electric and magnetic fields at right angles to each other and both are perpendicular to the direction of propagation of the wave. Electromagnetic waves differ in wavelength. Fig1. Propagation of em wave
In an electronegative wave the electric field E(vector) and the Magnetic field B(vector) oscillate perpendicular to each other and both are perpendicular to direction of propagation of wave. The E and B fields, along with being perpendicular to each other, are perpendicular to the direction the wave travels, meaning that an electromagnetic wave is a transverse wave. Electromagnetic waves were first postulated by James Clerk Maxwell and subsequently confirmed by Heinrich Hertz. Maxwell derived a wave form of the electric and magnetic equations, revealing the wave-like nature of electric and magnetic fields, and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave.
According to Maxwell's equations, a spatially-varying electric field generates a time-varying magnetic field and vice versa. Therefore, as an oscillating electric field generates an oscillating magnetic field, the magnetic field in turn generates an oscillating electric field, and so on. These oscillating fields together form an electromagnetic wave.
2. Properties of electromagnetic waves 1) Electromagnetic waves are propagated by oscillating electric and magnetic fields oscillating at right