| 摘要 |
<p>In order to measure leakage power to an adjacent channel when burst signals are used as communication signals, the input signals are converted into digital signals by means of an A/D converter (23) and the digital signals combined with modulated signals are written in a waveform memory (25). The input signals read out from the memory (25) are demodulated into the original digital data by means of a demodulating section (29). An extraction section calculating section (33) determines the extraction section AR of the input signals stored in the memory (25) by detecting the synchronizing word position of the demodulated digital data. One or more filters (35a and 35) pass the signal components in each frequency band of a main channel and the adjacent channels of the main channel. Switching sections (34 and 28) supply the signals in the determined extraction section out of the input signals stored in the memory (25) to each filter. One or more of power measuring sections (35a and 36) measure the power of each signal component passed through each filter.</p> |
