Overlay class F choke
US9030256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2011 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/21157
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure relate to an overlay class F choke of a radio frequency (RF) power amplifier (PA) stage and an RF PA amplifying transistor of the RF PA stage. The overlay class F choke includes a pair of mutually coupled class F inductive elements, which are coupled in series between a PA envelope power supply and a collector of the RF PA amplifying transistor. In one embodiment of the RF PA stage, the RF PA stage receives and amplifies an RF stage input signal to provide an RF stage output signal using the RF PA amplifying transistor. The collector of the RF PA amplifying transistor provides the RF stage output signal. The PA envelope power supply provides an envelope power supply signal to the overlay class F choke. The envelope power supply signal provides power for amplification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.