Wideband parallel processing digital tuner
US6263195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wideband digital tuner (14') has an analog front-end section (10), a high speed analog-to-digital converter (12), demultiplexer (13) and a plurality of filters (34.sub.1 -34.sub.2) arranged in a parallel input architecture to process wideband digital data received at extremely high sampling rates, such as at 2 Gsps (giga-samples per second). The tuner greatly attenuates an undesired spectral half of the wide bandwidth digital spectrum of the incoming digital signal using a complex band-pass filter, such as a Hilbert Transform filter. The tuner places the remaining half of the wide bandwidth digital spectrum of the incoming digital signal at complex baseband and down samples by 2. The architecture of the tuner can be partitioned into two separate halves which are hardware copies of each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.