Low noise amplifier and method of input impedance control for terrestrial and cable modes
US8611844B2 · kind B2 · utility
4Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jun 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H40/27
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low noise amplifier (LNA) for use in a receiver circuit includes an adjustable impedance network including an input for receiving a radio frequency signal, a plurality of control inputs, and an output. The LNA further includes a controller coupled to the plurality of control inputs and configured to control an impedance of the adjustable impedance network. The controller controls the adjustable impedance network to provide a relatively low impedance in a terrestrial mode and to provide a relatively high impedance in a cable mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.