Digitally modulated CATV power measurement using undersampling
US6041076A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Dec 2, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/327
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal power measurement apparatus for measuring the power of a first signal, with the first signal comprising a carrier signal modulated by an information signal. One embodiment of the present invention includes a signal power measurement apparatus comprising a RF receiver, an A/D converter, and a digital signal processing circuit. The RF receiver is operable to receive a first signal and generate an intermediate signal, with the intermediate signal comprising at least a portion of the first signal and having a bandwidth and a cutoff frequency. The A/D converter is operably connected to the RF receiver to receive the intermediate signal. The A/D converter generates a digital intermediate signal based on the intermediate signal, the digital intermediate signal having a sample rate less than twice the cutoff frequency. The digital signal processing circuit is operable to perform a power measurement on the digital intermediate signal, with the power measurement being representative of the power of at least a portion of the first signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.