For a carrier frequency of 100 kHz and a modulating frequency of 5 kHz, what is the band width o

step 1 In this question we have given that for a carrier frequency of 100 kHz and a modulation frequenc

For a carrier frequency of 100 kHz and a modulating...

For a carrier frequency of $100 \mathrm{kHz}$ and a modulating frequency of $5 \mathrm{kHz}$, what is the band width of AM transmission?
(A) $5 \mathrm{kHz}$
(B) $10 \mathrm{kHz}$
(C) $20 \mathrm{kHz}$
(D) $200 \mathrm{kHz}$

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Key Concepts

Amplitude Modulation

Amplitude Modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. In AM, the amplitude (or strength) of the carrier wave is varied in proportion to the instantaneous value of the modulating signal while the frequency remains constant. This concept is fundamental in understanding how information is encoded onto a carrier signal for effective transmission.

Double Sideband Transmission

In standard amplitude modulation, known as Double Sideband Amplitude Modulation (DSB-AM), the modulated signal produces two sidebands – one above and one below the carrier frequency. These sidebands contain the information from the modulating signal. Recognizing the existence of both sidebands is crucial for understanding how the overall frequency spectrum of an AM signal is formed.

Bandwidth Calculation in AM

The total bandwidth of an AM signal in Double Sideband transmission is determined by the frequency components that make up the sidebands. Specifically, it is twice the highest frequency present in the modulating signal. This is because one sideband extends above the carrier frequency and the other extends below it, meaning both contribute equally to the overall bandwidth.

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