发明名称 |
SYSTEM AND METHOD OF PREBIAS FOR RAPID POWER AMPLIFIER RESPONSE CORRECTION |
摘要 |
A system and method are provided for reducing dynamic EVM of an integrated circuit power amplifier (PA) used for RF communication. In a multistage PA, the largest amplification stage is biased with a high amplitude current pulse upon receipt of a Tx enable, before receipt of the RF signal data burst. The high amplitude current pulse causes a large portion of the total ICQ budget of the multistage PA to pass through the largest amplification stage causing the entire integrated circuit to rapidly approach steady-state operating conditions. A smoothing bias current is applied to the largest amplification stage after the pulse decays to compensate for transient bias current levels while standard bias circuitry is still approaching steady-state temperature.
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申请公布号 |
US2013034144(A1) |
申请公布日期 |
2013.02.07 |
申请号 |
US201213536009 |
申请日期 |
2012.06.28 |
申请人 |
DOHERTY MARK;LAM LUI (RAY);HUANG CHUN-WEN PAUL |
发明人 |
DOHERTY MARK;LAM LUI (RAY);HUANG CHUN-WEN PAUL |
分类号 |
H04L25/49;H04L27/01 |
主分类号 |
H04L25/49 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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