发明名称 |
Method and apparatus for power modulating to prevent instances of clipping |
摘要 |
A voltage (Vo) is added to an envelope function and input into a switching modulator (105). The output of the switching modulator (VSUP) is input to a linear regulator (103) where amplitude compensation of VSUP takes place and is output as VPA. VPA is then used to accomplish envelope modulation of a power amplifier (101). The value chosen for Vo is chosen to be adequate to maintain VSUP(t)>VPA(t) over all time.
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申请公布号 |
US6624711(B1) |
申请公布日期 |
2003.09.23 |
申请号 |
US20020166991 |
申请日期 |
2002.06.11 |
申请人 |
MOTOROLA, INC. |
发明人 |
KHAN ANDREW;CYGAN LAWRENCE |
分类号 |
H03F1/02;(IPC1-7):H03K7/00 |
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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