Variable-gain low noise amplifier to reduce linearity requirements on a radio receiver
US7054605B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Apr 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3068
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Variable gain low noise amplifier (LNA) system to reduce linearity requirements on a radio receiver. In the receiver, the LNA is coupled to receive an RF signal and produce an amplified signal at an LNA output. The receiver also comprises a VGA coupled to the LNA output to receive the amplified signal and produce a VGA output to downstream components of the receiver. The receiver also comprises a control network coupled to the LNA and the VGA. The control network operates to adjust gain factors of the continuously variable LNA and the VGA based on a received power indicator of the RF signal, so that a signal-to-noise ratio required for demodulation of the RF signal is met with a selected margin and the linearity requirements of the receiver are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.