High linearity, low noise figure tuner front end circuit
US7394505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2002 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | May 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cable tuner front end circuit is disclosed for receiving a radio frequency television input signal and for selectively amplifying the signal in dependence upon a predetermined level of the tuner circuit output signal. The tuner front end circuit having first and second radio frequency paths, where in dependence upon the predetermined level of the output signal, the input signal either propagating along the first path without amplification or the input signal propagating along the second path with low noise amplification. Such that, when amplification is not required the amplifier circuit is disabled thereby offering a savings in tuner circuit power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.