Spectrum analyzer with multiple operational modes
US4054785A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1976 |
| Grant date | Oct 18, 1977 |
| Priority date | — |
| Expiry date | Sep 16, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a fully digital spectrum analyzer which includes a digital frequency translator that makes it possible to effectively analyze frequency bands that do not start at zero frequency. With the translator, the available spectral lines can be within the band of interest and not wasted in the range from zero frequency to the start of the band, and as a result the band is examined at optimal resolution. The translation takes place after the signal to be analyzed has been digitized, and the translator time-shares much of the conventional circuitry of the spectrum analyzer, to thereby minimize the cost of translation. Additionally, the spectrum analyzer includes an analog network that reduces the frequency of very fast signals so they can be analyzed by a spectrum analyzer having a relatively low upper frequency limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.