#### Marasha

Joined Feb 6, 2018
14
Greetings.
Below is the circuit (or imgur link). How can I find the amplitude, offset (if any) and frequency of the two signals in order to produce an AM-DSB signal with the following characteristics:

Modulation Factor = 80%
Carrier Power = 450μWatt
fcarrier = 16kHz
Bandwidth Bm= 1kHz

Thank you!

#### crutschow

Joined Mar 14, 2008
31,554
Do you understand how an AM DSB signal is generated?

#### Marasha

Joined Feb 6, 2018
14
Do you understand how an AM DSB signal is generated?
Yes, I understand the theory of it but I can't figure out how to find the generated signal's amplitude and frequency.

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#### crutschow

Joined Mar 14, 2008
31,554
Yes, I understand the theory of it but I can't figure out how to find the generated signal's amplitude and frequency.
So then, given a carrier signal and a modulating signal, you should know the equation that shows how the two signals are multiplied together for generating the modulated signal,

From that you can then look up the AD633 multiplier data sheet characteristics and determine how to get the desired signal.

Since you are given the carrier power, you need to know the impedance of the carrier signal circuit to determine its voltage.

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#### Marasha

Joined Feb 6, 2018
14
To be honest, the professor only gave us a couple equations and they have too many unknowns.
Best I could find:
M(t)=S*cos(2π*16000*t)
But I don't know the amplitude or the result on a given time.
This equation is not even on the notes given to us, but it's the best I could find.
Also, how do I access the multiplier data sheet characteristics?

Thanks for your time and let me know if I don't make sense, English is not my native language.