Variable gain low noise amplifier for a wireless terminal
US6424222B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7236
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable gain, low noise amplifier is described, which is suitable as the input amplifier for a wireless terminal, or as the pre-amplifier stage of a wireless terminal transmitter. The amplifier may achieve variable gain by deploying a network of transistors in a parallel array, each independently selectable by a PMOS switch, and providing the variable resistance for the resonant circuit. Power dissipation can also be mitigated by using a network of driving transistors, each independently selectable by a PMOS switch. The resonant frequency of the amplifier may be made tunable by providing a selection of optional pull-up capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.