Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Relation between Frequency deviation and multiplier

Status
Not open for further replies.
R

Rayengine

Full Member level 5
Joined
May 18, 2001
Messages
287
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,298
Location
Hong Kong
Activity points
1,737
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
 

do math

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.
 

How about the phase noise, if pass through the multiplier?
 

it too

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.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top