Receiver with tuner front end using tracking filters and calibration
US8150351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2007 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in-package (SIP) with other critical tuner components, which produces a highly integrated tuner front end with high Q filters within a single package. High voltage varactors with a large tuning range can be used for variable capacitors. The integration of the tuner into a SIP allows the tuner design to be optimized for cost and performance while keeping the critical RF layout requirements within the tuner. A configurable tuner front end enables modes for low noise, high linearity, good input return loss (S11) across the entire RF band, and applying a test tone in the calibration mode. The switchable mode enables the tuner to be effective during weak terrestrial reception, strong terrestrial reception, and connection to a cable plant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.