Drain sharing split LNA
US10381991B1 · kind B1 · utility
6Cited by
2References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2018 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/16
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A receiver front end having low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” configured input FET and a “common gate” configured output FET can be turned on or off using the gate of the output FET. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input FET of each LNA. A drain switch is provided between the drain terminals of input FETs to place the input FETs in parallel. This increases the gm of the input stage of the amplifier, thus improving the noise figure of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.