| 发明名称 |
Method for system level oriented load-pull-based envelope tracking power amplifiers |
| 摘要 |
The method for system level oriented load-pull-based envelope tracking power amplifiers includes steps of performing a multi-dimensional load-pull and selecting the reflection coefficients to be presented to the transistor while taking into account the system level architecture of the power amplifier. It is shown that adopting the proposed load reflection coefficient selection algorithm leads to an additional efficiency enhancement. This extra performance is achieved without additional circuitry or cost. |
| 申请公布号 |
US9484861(B1) |
申请公布日期 |
2016.11.01 |
| 申请号 |
US201514951470 |
申请日期 |
2015.11.24 |
| 申请人 |
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS |
发明人 |
Hammi Oualid;Khalifa Mohamed Osman Hussein |
| 分类号 |
H03G3/20;H03F1/02;H03F3/19;H03F3/21 |
主分类号 |
H03G3/20 |
| 代理机构 |
|
代理人 |
Litman Richard C. |
| 主权项 |
1. A method for system level oriented load-pull-based envelope tracking power amplifiers (PAs), comprising the steps of:
(a) selecting a load reflection coefficient, (ΓL); (b) applying direct and quadrature components, [I(n), Q(n)], of a modulated signal waveform; (c) calculating instantaneous input power Pin (n); (d) calculating instantaneous drain voltage of the PA; (e) estimating instantaneous amplifier performance η(n); (f) estimating average amplifier performance ηavg(ΓL); and (g) repeating steps (a) through (f) until a desired average amplifier performance is achieved. |
| 地址 |
Dhahran SA |
