Low noise amplifiers for low-power impulse radio ultra-wideband receivers
US7679436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | May 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45638
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention is related to low power low noise amplifiers (LNA) including on/off switching capability, which are preferably used for impulse radio (IR) ultra-wideband (UWB) receivers. In the invention a very low power and high-gain Common-Gate Capacitive Cross Coupling Cascaded LNA is proposed, to provide an optimum gain for large ON times. The invention provides also a Common-Source Cascoded LNA for shorter received pulse widths, with the aim of implementing a fast ON/OFF switching. An input signal is applied to a first amplifying stage and the switching means are coupled to a second amplifying stage so that they do not interfere with the matching network of the first stage. The invention is also related to a method of amplifying a radio frequency signal using a plurality of low noise amplifying elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.