In: Computer Science
If a periodic signal is decomposed into five sine waves with frequencies of 50, 300, 500, 700, and 1800 GHz, what is the bandwidth? Draw the spectrum in periodic and non-periodic form, assuming components have a maximum amplitude of 5,10,1510 and 5V, express this as a function of frequency. Why can’t these spectrum be sketch as a function of time?
Periodic signal is decomposed into five sine waves with frequency
=50 Ghz
=300 Ghz
=500 Ghz
=700 Ghz
=1800 Ghz
So highest frequency =1800 Ghz
Lowest frequency =50 Ghz
Bandwidth is the difference between highest and lowest frequency.
Bandwidth =
Bandwidth =1800-50=1750 Ghz
The bandwidth is 1750 Ghz
The spectrum in periodic form is drawn by using maximum amplitude values and frequencies given and the spectrum has only 5 spikes at 50,300,500,700 and 1800.The maximum amplitude is 15 V at frequency 500 Ghz which is peak value of amplitude.
The frequency 50,300,500,700 and 1800 Ghz have maximum amplitude 5,10,15,10,5 V and the periodic and non periodic spectrum as a function of frequency is shown below
F1
F2
F3
F4
F5
F5
F1
F5 F1
PERIODIC SPECTROM Amplitude (u 25 20+ ist 10+ 50GHz 300 560 700 1800 GM2 GHz Frequency 4 BANDWIDTH= 1800-50-1750 GHz CScanned with CamScanner
NON PERIODIC SPECTROM Amplitude (vi 20+ Peak values 15 5 50 300 -> 500 foo ISOO Frequency (GHz) BANDWIDTH = 1800-50 = 1750 GHz CScanned with CamScanner