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Revision: Communication Systems JEE Main Communication Systems

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Definitions [1]

A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal are ______. 

A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal are 2005 kHz, 2000 kHz and 1995 kHz.

Explanation:

Amplitude modulated wave consists of three frequencies are ωc + ωm, ω, ωc - ωm

i.e. 2005 kHz, 2000 kHz and 1995 kHz.

Concepts [12]

  • Communication System
  • Propagation of EM Waves
  • Need for Modulation and Demodulation
  • Modulation and Its Necessity
  • Amplitude Modulation (AM)
  • Detection of Amplitude Modulated Wave
  • Production of Amplitude Modulated Wave
  • Frequency Modulation (FM)
  • Bandwidth of Signals
  • Bandwidth of Transmission Medium
  • Basic Terminology Used in Electronic Communication Systems
  • Satellite Communication
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