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.

frequency domain representation

Status
Not open for further replies.

moonnightingale

Full Member level 6
Joined
Sep 17, 2009
Messages
362
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,298
Activity points
3,832
If i am having a signal

cos (4000*pi*t)
and i have to represent in frequency domain
then is this solution correct:-

since
omega =2*Pi*f
so 2*pi*f = 4000* Pi

f=2000

so it means that frequnecy of our signal is 2000 Hz

now i can plot it this way
 

Attachments

  • freq domain.jpg
    freq domain.jpg
    25.4 KB · Views: 54

The Fourier Transform (Or frequency domain representation ) of Cos(2*pi*f0*t) is 0.5*( delta(f-f0)+delta(f+f0)). If you want to represent it graphically, Conventionally it is shown by two arrows at +f0 and -f0.
P.S: delta(x) is the dirac function.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top