On-die harmonics filtering for radio frequency power amplifiers
US9054653B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier architecture for connecting a radio frequency (RF) transceiver to an antenna. An input matching circuit is connected to its input port, and an output matching circuit is connected to its output port. An amplifier circuit includes at least one amplifier active device with a first terminal connected to the input matching segment and a second terminal connected to the output matching segment. A first harmonic feedback circuit is connected across the amplifier active device. Voltage components of emissions of one or more harmonic frequencies of a carrier fundamental frequency generated by the amplifier active device is fed back with opposite phase to the first terminal of the amplifier active device. A negative feedback is defined at a level correlated with a gain level of the amplifier active device at the harmonic frequencies of the carrier fundamental frequency. Negative feedback is minimized at the carrier fundamental frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.