How do we interpret infinite frequency?

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Re: Frequency

magnetra said:
How do we interpret infinite frequency??
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Strange Ques.

but if we said that the period T = 1/f

then T=0 !!!

the def. of the period is the time interval between two peaks ,so the time interval is now zero which means all the peaks(min & max) & all the points are now beside its other , we can see it asif there is filled rectangle of height (Vp-p) and with length the time scale......!!

something like that ||||||||||||||||||||||||
--------------------------> time

but without any space in between
 

Frequency

please specify under what circumstance you use this term, maybe that will be helpful!
 

Re: Frequency

fourier series says any signal can be constructed using sinusoids and cosinusoids. The rectangular signal can be constructed using sine of frequency from -∞ to +∞.
the reason is rectangular signal has discontinuity at transition from lower to higher. so the sinusoid of infinite frequncy will have an impulse of rms value. it practically not feasible. That is the reason why we go to pass band for base band communication.
 

Re: Frequency

Osama's answer was quiet interesting & he was somewhat on line.
A DC is regarded as having zero frequency and its amplitude doesn't vary with time; it's simply a straight line with zero gradient.

A signal with infinite frequency, if i recall, is known as a delta function. And this is simply a vertical spike, with dT=0. T=time.

Great post this was. Sent chaps thinking!!
 

Re: Frequency

it is just that Time period is 0 and hence it means that the value we are dealing with doesn't change with time
 

Frequency

A signal with infinite frequency is a signal for which the periodicity can not be found,example: dc, delta function, noise (real random noise),etc. If the periodicity can not be found then the Fourier is not defined.
 

Re: Frequency

hi,
a signal with infinite frequency is called a CONSTANT signal..
ex: dc signal
happy learning....
 

Re: Frequency

I think dc signal has frequency as zero.

Added after 5 minutes:

A DC signal has time period T = ∞ so its frequency f = 1/T = 0

Regds
Magnetra
 

Re: Frequency

Dont forget! To be able to talk about frequency of a signal, it should be periodic somehow. If not, no frequency.. A quantity or body without any repetation itself in the 4-d space. What it can be?????

Kind regards
 

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