FREQUENCY ANALYSIS DEVICE, SIGNAL PROCESSING APPARATUS USING THE DEVICE, AND HIGH-FREQUENCY MEASUREMENT INSTRUMENT USING THE APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a frequency analysis device capable of outputting a conversion result for a target frequency regardless of a sampling frequency.SOLUTION: A frequency analysis device includes: a sampling part 1 for sampling for an input analog signal to generate sampling data; a data conversion part 5 for converting the sampling data into re-sampling data that is sampling data corresponding to a target frequency of the analog signal; and an FFT process part 6 for applying high-speed Fourier transformation processing to the re-sampling data to output a conversion result for each frequency. The sampling data generated by the sampling part 1 is converted into re-sampling data corresponding to a target frequency of an analog signal, and high-speed Fourier transformation is applied to the re-sampling data. Therefore, it is possible to output a conversion result for a target frequency regardless of the sampling frequency.