Real-time signal analyzer
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United States of America Patent
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Apr 23, 2002
Grant Date -
N/A
app pub date -
Jun 4, 1999
filing date -
Dec 11, 1996
priority date (Note) -
Expired
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Abstract
This invention relates to a new type real time signal analyzer that has both merits of a conventional real time FFT analyzer and a conventional vector signal analyzer and clears both demerits of them. This apparatus has a FFT processor 14 for FFT processing time domain data in real time, a FIFO memory 22 for delaying the time domain data before the FFT process, and a double port memory 24 for storing FFT processed frequency data from the FFT processor 14 and delayed time domain data read out from the FIFO memory 22. The delay time of the FIFO memory 22 is set up according to the process time of the FFT processor 14 that allows to secure time correspondence between the delayed time domain data and the frequency domain data. Therefore it respectively provides the data of the time domain and the frequency domain in real time at the same time that are synchronized each other.
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