| 发明名称 |
APPARATUS AND METHODS FOR BIASING A POWER AMPLIFIER |
| 摘要 |
Apparatus and methods for biasing a power amplifier are disclosed. In one embodiment, a method of biasing a power amplifier includes shaping an enable signal using a time-dependent signal generator to generate a control current, amplifying the control current using a current amplifier to generate a correction current, and generating a bias current for a power amplifier using a primary biasing circuit. The primary biasing circuit is configured to use the correction current to correct for a variation in gain of the power amplifier when the power amplifier is enabled. |
| 申请公布号 |
US2014210552(A1) |
申请公布日期 |
2014.07.31 |
| 申请号 |
US201414242150 |
申请日期 |
2014.04.01 |
| 申请人 |
SKYWORKS SOLUTIONS, INC. |
发明人 |
Li Ping;DiCarlo Paul T. |
| 分类号 |
H03G3/30;H03F3/19;H03F3/21 |
主分类号 |
H03G3/30 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A power amplifier system comprising:
a power amplifier configured to amplify a radio frequency (RF) signal; and a bias block for biasing the power amplifier, the bias block including a time-dependent signal generator configured to shape an enable signal of the power amplifier to generate a control current, a current amplifier configured to amplify the control current to generate a correction current, and a primary biasing circuit configured to generate a bias current for the power amplifier based at least partly on the correction current, the bias current configured to correct for a variation in gain of the power amplifier when the power amplifier is enabled. |
| 地址 |
Woburn MA US |
