发明名称 |
Apparatus and methods for envelope tracking |
摘要 |
Apparatus and methods for envelope tracking are disclosed. In one embodiment, a power amplifier system including a power amplifier and an envelope tracker is provided. The power amplifier is configured to amplify a radio frequency (RF) signal, and the envelope tracker is configured to control a supply voltage of the power amplifier using an envelope of the RF signal. The envelope tracker includes a buck converter for generating a buck voltage from a battery voltage and a digital-to-analog conversion (DAC) module for adjusting the buck voltage based on the envelope of the RF signal to generate the supply voltage for the power amplifier. |
申请公布号 |
US8718188(B2) |
申请公布日期 |
2014.05.06 |
申请号 |
US201213452620 |
申请日期 |
2012.04.20 |
申请人 |
BALTEANU FLORINEL G.;KHESBAK SABAH;TKACHENKO YEVGENIY A.;RIPLEY DAVID STEVEN;THOMPSON ROBERT JOHN;SKYWORKS SOLUTIONS, INC. |
发明人 |
BALTEANU FLORINEL G.;KHESBAK SABAH;TKACHENKO YEVGENIY A.;RIPLEY DAVID STEVEN;THOMPSON ROBERT JOHN |
分类号 |
H04K1/02;H04L25/03;H04L25/49 |
主分类号 |
H04K1/02 |
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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