Switchable multiband LNA design
US8294520B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | May 19, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | May 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low noise amplifying (LNA) circuit comprising an amplifying section (11, 12) and a feedback means (14) arranged for providing input matching from the output to the input. The LNA circuit further comprises at least one frequency band determining inductor (15) having a predetermined resonance frequency for influencing at least one frequency band in which the amplifying section operates. The at least one inductor is directly connected to the output of the circuit and the feedback means (14) provides a feedback connection for the section (s) to the input. In this way, the at least one frequency band in which the amplifying section operates is substantially completely determined by the at least one frequency band determining inductor (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.