Self-contained, real-time spectrum analyzer
US4950999A · kind A · utility
Inventors
Key dates
| Filing date | Mar 6, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A self-contained, real-time spectrum analyzer performs the function of spectrum analysis on one or more analog electrical signals. The analyzer consists of an oversampling analog-to-digital converter 104, which converts the input signal 100 to digital form. The digital signal enters a digital signal processing integrated circuit microprocessor 108, which is operated by a stored program 112 that includes a spectrum analysis program 116. The output 122 of the digital signal processor 108 can be converted to analog signals by digital analog converters 124 for display on an external oscilloscope. A variable frequency oscillator 200 controls the sampling of the analog-to-digital converter 104, providing continuously variable analysis bandwidth. The output of the digital signal processor 108 can be applied to a display register and driver 300, which changes the output into a data format 302 suitable for use by a flat screen display 304. Visual output is presented to the user on a flat screen display 304, such as a liquid crystal display or electroluminescent display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.