Class-E radio frequency power amplifier with feedback control
US7535296B2 · kind B2 · utility
28Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Jun 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Class-E power amplifier includes a choke and a switch connected in series between a source of a supply voltage and circuit ground and connected to an inductively coupled coil. An output node of the amplifier is formed between choke and the switch and connected to a transmitter antenna. A shunt capacitor couples the amplifier's output node to the circuit ground. A feedback signal, indicating an intensity if the signal at the amplifier output node is used to vary the input signal to the Class-E power amplifier and thereby control operation of the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.