Apparatus and methods for biasing of power amplifiers
US11070171B2 · kind B2 · utility
2Cited by
38References
20Claims
0Family size
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Key dates
| Filing date | Jan 9, 2020 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jan 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0433
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for biasing power amplifiers are provided herein. In certain embodiments, a power amplifier includes a bipolar transistor having a base biased by a bias network having a reactance that controls an impedance at the transistor base to achieve substantially flat phase response over large dynamic power levels. For example, the bias network can have a frequency response, such as a high-pass or band-pass response, that reduces the impact of power level on phase distortion (AM/PM).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.