Directional coupler architecture for radio frequency power amplifier with complex load
US8606198B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2012 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jul 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Various embodiments may provide a circuit including a radio frequency (RF) power amplifier (PA) and a coupler (e.g., a directional coupler). The coupler may be coupled between a first impedance matching section and a second impedance matching section. The first matching section may transform a first impedance at the RF PA to a second impedance at an RF input port of the coupler. The second matching section may transform the second impedance at an RF output port of the coupler to a third impedance at an output terminal. The second impedance may be a real impedance and the third impedance may be a complex impedance. A real part of the third impedance may be greater than a real part of the second impedance. Additionally, the second impedance may be greater than the first impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.