AnsweredAssumed Answered

vrf freq. domain

Question asked by rsb on Sep 29, 2005
Latest reply on Sep 29, 2005 by rsb
wsh wsh <wshooa@yahoo.com> wrote:
> hi all
> i write a program to capture a RF signal by a spectrum analyzer and transfere
> it to the controller PC .... then display it ( with coord format ( amp. ,
> freq. ) ) by a waveform display
> so i have each signal as an arry of points ... can i convert it to the time
> domain in my PC ? and how ?

In general , yes, but not the way you probably want.

The reason is that you only have magnitude data in the freq
domain. Without the phase data you are missing half of the information
needed to create the time dmoain signal.

You can certainly take an inverse fourier transform  but that in
principle will give you a complex time domain signal which
may or may not look something like what you would see on an oscilloscope.

If you want time domain you really need to measure phase- or measure
time domain directly.

regards

Stan


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Stan Bischof  Agilent Technologies  707-577-3994  stan_bischof@agilent.com
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