发明名称 |
DYNAMIC HEADROOM FOR ENVELOPE TRACKING |
摘要 |
Techniques for dynamically generating a headroom voltage for an envelope tracking system. In an aspect, an initial headroom voltage is updated when a signal from a power amplifier (PA) indicates that the PA headroom is insufficient. The initial headroom voltage may be updated to an operating headroom voltage that includes the initial voltage plus a deficiency voltage plus a margin. In this manner, the operating headroom voltage may be dynamically selected to minimize power consumption while still ensuring that the PA is linear. In a further aspect, a specific exemplary embodiment of a headroom voltage generator using a counter is described. |
申请公布号 |
WO2014116608(A3) |
申请公布日期 |
2014.12.04 |
申请号 |
WO2014US12393 |
申请日期 |
2014.01.21 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
MATHE, LENNART KARL-AXEL;LI, PENGFEI;SHI, SONG;SHI, YUNFEI;RUTKOWSKI, JOSEPH |
分类号 |
H03F1/02 |
主分类号 |
H03F1/02 |
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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