Signal analyzing apparatus
US6631341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Sep 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an RBW filter, a bandwidth is set so as to selectively pass a frequency component of only a desired signal bandwidth of the measured signals that have been frequency converted into a normalized intermediate frequency signal. A waveform detector detects a signal that passes through the RBW filter. An A/D converter samples the signal detected by the waveform detector at a predetermined sampling rate at which a Nyquist frequency is within the frequency bandwidth of the RBW filter, thereby converting the sampled signal into digital data. A data storage section stores the digital data converted by the A/D converter. A signal processing section re-samples the digital data stored in the data storage section so as to reproduce a bandwidth of the detection signal of the waveform detector, thereby generating arbitrary time data. A display section displays the arbitrary time data generated by the signal processing section while time and amplitude are defined on horizontal and vertical directions on the display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.