How is AM Bandwidth Determined?

Click For Summary
The total bandwidth for an 800 MHz carrier modulated with frequencies from 200 Hz to 3.3 kHz is determined by the modulation range, which is 3.1 kHz. This results in a total bandwidth of 6.2 kHz, as the bandwidth is calculated by doubling the maximum modulating frequency. The discussion emphasizes the importance of understanding the total required spectrum for amplitude modulation (AM) and suggests disregarding the lower modulating frequency for this calculation. Additionally, it prompts consideration of how to find the width of the two sidebands in AM. Understanding these principles is crucial for accurately determining bandwidth in communication systems.
fran1942
Messages
80
Reaction score
0
Hello, if I was using an 800Mhz carrier which was modulated with the range of frequencies 200Hz-3.3khz, what would be the total bandwidth ?

Would it be 3.1Khz * 2 = 6.2kHz or would it be 6.6kHz ?

Thanks for any help.
 
Physics news on Phys.org
Figure it out for yourself.

Assuming a.m., what do you get when you modulate sin(ωct) with sin(ωmt)?

By "bandwidth", assume the total required spectrum for your a.m. carrier.
 
The clue is the word 'total'...you can disregard the lower modulating frequency of 200Hz
Would you know how to find the width of the 2 sidebands if you were asked?
 

Similar threads

Why does increasing the message bandwidth decrease the FM bandwidth?
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Digital Communications: Bit Error Rate (BER), C/N, Constellations
  • · Replies 4 ·
Replies
4
Views
2K
Engineering Questions about the workings of a phase locked loop
  • · Replies 10 ·
Replies
10
Views
2K
Understand the concept of bandwidth
  • · Replies 24 ·
Replies
24
Views
3K
Finding the bandwidth of a parallel RLC circuit (+MATLAB)
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Finding the center frequency and bandwidth of a Pass-band filter
  • · Replies 7 ·
Replies
7
Views
5K
Modulation & demodulation of GPS output digital data
  • · Replies 10 ·
Replies
10
Views
2K
Calculating Bandwidth of AM Signal with Dual Cosine Modulation
  • · Replies 1 ·
Replies
1
Views
8K
Can someone give me a better intuition of bandwidth?
  • · Replies 23 ·
Replies
23
Views
2K
Calculating Bandwidth of FM Signal: Angle Modulation Q1
  • · Replies 12 ·
Replies
12
Views
4K