| 发明名称 |
DOHERTY POWER AMPLIFIER HAVING AM-AM COMPENSATION |
| 摘要 |
A power amplification system includes a Doherty power amplifier (PA) configured to receive a voltage supply signal and a radio-frequency (RF) signal and generate an amplified RF signal using the voltage supply signal, the Doherty PA including a carrier amplifier and a peaking amplifier. A carrier amplifier bias circuit and a peaking amplifier bias circuit coupled to one or more of the carrier amplifier and the carrier amplifier bias circuit over a coupling path are provided wherein the peaking amplifier bias circuit is configured to provide a peaking bias signal to the peaking amplifier based on a saturation level of the carrier amplifier. |
| 申请公布号 |
US2016241209(A1) |
申请公布日期 |
2016.08.18 |
| 申请号 |
US201615043459 |
申请日期 |
2016.02.12 |
| 申请人 |
SKYWORKS SOLUTIONS, INC. |
发明人 |
LEHTOLA Philip John |
| 分类号 |
H03F3/21;H04B1/40;H03F3/195;H03F3/24;H03F1/56;H03F1/02 |
主分类号 |
H03F3/21 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A power amplification system comprising:
a Doherty power amplifier (PA) configured to receive a voltage supply signal and a radio-frequency (RF) signal and generate an amplified RF signal using the voltage supply signal, the Doherty PA including a carrier amplifier and a peaking amplifier; a carrier amplifier bias circuit; and a peaking amplifier bias circuit coupled to one or more of the carrier amplifier and the carrier amplifier bias circuit over a coupling path and configured to provide a peaking amplifier bias signal to the peaking amplifier based on a saturation level of the carrier amplifier. |
| 地址 |
Woburn MA US |
