Dynamic performance control of broadband tuner
US7783272B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Feb 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/228
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A broadband signal amplifier includes one of more broadband amplifier circuits, each dynamically controlled in response to a total power level of signals applied thereto to reduce linearity in response to a reduction of input signal strength. A filter may couple the output of the broadband amplifier circuits to each other to form a tandem arrangement. Power detectors are connected to detect and provide outputs indicative of the total power levels of the signals applied to respective broadband amplifiers. A control unit is connected to and receives the output from the power detectors and, in response, provides a control signals to the broadband amplifier circuit so as to operate each over portions of their operating characteristic curves that provide only that degree of linearity necessary to limit distortion to a predetermined or dynamically adjustable maximum acceptable level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.