Radio-frequency tuner with differential converter
US7319849B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Feb 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J1/0008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for tuning a radio-frequency signal includes a first input path, a second input path, a common reference generator, a selector, a mixer, and a filter. The first input path and the second input path propagate a first single-ended input signal and a second single-ended input signal, respectively, to the selector. The selector converts the first single-ended input signal and the second single-ended input signal into a first differential input signal and a second differential input signal, respectively, using a reference signal generated by the common reference generator.The selector selectively couples one of the first and the second input path to an input of the mixer. The mixer downconverts a selected on of the differential input signals received from the selector. The filter attenuates a portion of the downconverted input signal outside a passband associated with the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.