公开(公告)号：EP0945731A1

公开(公告)日：1999-09-29

申请号：EP97946823.8

申请日：1997-12-09

申请人： SONY/TEKTRONIX CORPORATION

发明人： NARA, Akira-Sony/Tektronix Corporation

IPC分类号： G01R23/16

CPC分类号： G01R23/16

摘要： 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.

摘要翻译： 本发明涉及一种新型实时信号分析仪，它具有传统的实时FFT分析仪和常规矢量信号分析仪的优点，并且清除了它们的两个缺点。 该装置具有用于实时FFT处理时域数据的FFT处理器14，用于在FFT处理之前延迟时域数据的FIFO存储器22和用于存储来自FFT处理器14的FFT处理的频率数据的双端口存储器24，以及 延迟的时域数据从FIFO存储器22读出。FIFO存储器22的延迟时间是根据FFT处理器14的处理时间来设置的，该处理器14允许保证延迟时域数据与频域数据之间的时间对应 。 因此它分别同时提供时域和频域的数据，同时彼此同步。