How is AM Bandwidth Determined?

[fran1942]

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.

 

[rude man]

Figure it out for yourself.

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

By "bandwidth", assume the total required spectrum for your a.m. carrier.

 

[truesearch]

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?