Study Electronics & Communication Engineering
1. The propagation of electromagnetic waves near the surface of the earth is known as ground wave propagation. It is also known as surface wave propagation. 2. A wave is said to be a ground wave or surface wave when it propagates from the transmitter to receiver by gliding over the surface of the earth […]
Ground Wave Propagation & Angle of Tilt Read More »
1. The average magnetic field of the earth is about 40 A/m. The earth’s magnetic field causes the electrons to trace complicated trajectories with cyclotron or gyrofrequency fg = l.4 MHz at H = 40 A/m. 2. The earth’s magnetic field (B) exerts a deflecting force on the moving electrons. The magnitude of this force
Effect of Earth’s Magnetic Field on Wave Propagation Read More »
1. The output of the sun in all forms, light, solar wind and energetic particles is not constant. It varies with both time and position of the Sun. These changes are called Solar Activity. 2. The condition of the Sun has a major impact on ionospheric radio propagation. 3. As the Sun provides the radiation
Effect of Solar Activity on Wave Propagation Read More »
INTRODUCTION: 1. Bluetooth was originally envisioned in 1994 by Ericsson as a means of offering wireless links between mobile devices within a short distance. Later an association is formed in 1998 by several organisations called Bluetooth Special Interest Group (SIG). This association aimed to develop specifications, offering short-range connectivity within POS of a user. 2.
Bluetooth in Wireless Communication Read More »
1. In an event-driven simulation, time is advanced in non-uniform steps whose sizes depend on when event occurs. 2. It responds to each i/p event by executing a sequence of simulation cycles that determine when and to what values the simulated system’s signals change. 3. Advantages: Eliminates the need for the simulator to evaluate the
Event Driven Simulation in VHDL Read More »