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Rayengine
Joined: 18 May 2001
Posts: 314
Helped: 3
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 22 Mar 2003 14:26 Relation between Frequency deviation and multiplier |
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Hi,
If we multiple the carrier frequency by n times, then the frequency deviation of the input signal is also n times of original. Am I right ?
If we upconverting the carrier frequency by x Hz, what is then the relation of deviation?
Best RGs
Rayengine
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flatulent
Joined: 19 Jul 2002
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Location: Middle Earth
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| 22 Mar 2003 15:58 do math |
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These things are easier to visualize in algebra.
start with 1+d where d is deviation. If you mulitply you get 2+2d or twice the deviation.
If you mix you add and get A+1+d where A is the change in frequency. You have the same old d or deviation.
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Rayengine
Joined: 18 May 2001
Posts: 314
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| 24 Mar 2003 10:43 |
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| How about the phase noise, if pass through the multiplier?
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flatulent
Joined: 19 Jul 2002
Posts: 4856
Helped: 292
Location: Middle Earth
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| 24 Mar 2003 16:01 it too |
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The phase modulation and phase noise also gets multiplied.
The multiplication by a fraction, as done by a divider, will reduce the deviation and phase noise.
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