RX-TX switch with two power amplifiers
US9590689B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2012 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Feb 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/406
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An RF front end circuit has a common impedance matching network connected to an output terminal, a first power amplifier arranged to drive power to the output terminal through the common impedance matching network, a second power amplifier adapted to drive power to the output terminal through the common impedance matching network, a second impedance matching network, and a reference terminal at a reference voltage. The second impedance matching network has at least a first connection path to the reference terminal, a second connection path to the second power amplifier and a third connection path to the common impedance matching network. The second impedance matching network also includes a first impedance switch configured to open the first connection path responsive to the second power amplifier being put into an OFF state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.