Communication

Science > Physics > Communication

Communication System

  • Elements of Communications System
  • General Working of Communication System
  • Types of Communication System
  • Attenuation, Distortion, Interference, and Noise
  • Antenna and its Types
  • Size of Antenna or Aerial
  • Calculation of Antenna or Aerial Size

Terminology of Communication System

  • Transducer
  • Analog and Digital signals
  • Transmitter and Receiver
  • Modulator and Demodulator
  • Bandwidth of Signal and Bandwidth of Transmitting Medium

Communication Channel: The Atmosphere

  • Earth’s Atmosphere
  • Importance of Radio Waves
  • Space Communication
  • Ground Waves and Skywaves
  • Space Wave Propagation

Antenna and its Coverage Area

  • Expression for Coverage Area of Transmission Antenna
  • Numerical Problems on Calculation of Coverage Area and Viewership

Satellite Communication

  • The Principle of Satellite Communication
  • Geostationary Satellite and its Uses
  • Polar satellite and its Uses
  • Global Communication

Communication Channels: Wires, Cables, and Optical Fibres

  • Two-wire Transmission Lines
  • Coaxial Cables
  • Optical Fibres.

Optical Fibre: Principle, Construction, and Working

  • Characteristics of Optical Fibre
  • Construction of Optical Fibre
  • Total Internal Reflection of Light
  • Working of Optical Fibre
  • Analytical Treatment of Optical Fibres
  • Acceptance Angle and Acceptance Cone
  • Numerical Aperture of Optical Fibre
  • Fibre Attenuation
  • Fabricating Optical Fibre

Modulation

  • Need for Modulation of Signal
  • Size of the Antenna or Aerial
  • Effective Power Radiated by Antenna
  • Mixing Up of Signals From Different Transmitters
  • Operating range
  • Types of Carrier Waves
  • Types of Modulation

Amplitude Modulation

  • Features of Amplitude Modulated Wave
  • Modulation Factor or Modulating Index
  • Importance of the Modulation Index
  • Expression For Modulation Index
  • Demodulation
  • Advantages Of Amplitude Modulation
  • Disadvantages of Amplitude Modulation
  • Disadvantages of Amplitude Modulation

Internet and Associated Technologies

  • The Internet
  • The Working of the Internet
  • The World Wide Web
  • Uses of the Internet

Science > Physics > Communication