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Re: Importing of measured waveform into ADS

Question asked by STUKHS on Dec 13, 2007
Latest reply on Jan 30, 2008 by STUKHS
Dear all,

I am currently doing an experiment with UWB signals at RF freq, and I use an DSO81304A Infiniium Oscilloscope to capture the waveform into a .csv format.

After some processing to obtain the entire burst, the file is converted into a .tim to be read in using a TimedDataRead module.

I have a few questions:

- I understand that Ptolemy works on baseband signals. Is there a need to do any downconversion?

- Alternatively, should I do a demodulation to obtain the I and Q components, before applying the signals to the EVM block to measure the performance?

- I understand that the UWB signal is a complex signal with Real and Imaginary components, as evident if the UWB source is written to a .ascsig output file. If I capture the waveform using the oscilloscope, would I only capture the Real components and in the process, lose the Imaginary components?

Thanks
KH  

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