发明名称 |
Low-voltage pre-distortion circuit for linear-in-dB variable-gain cells |
摘要 |
Circuits and methods for a low voltage pre-distortion circuits that provide a temperature and logarithmically compensated voltage such that a gain change of a variable gain amplifier is linear in dB and has a reduced temperature dependency. A temperature compensation circuit multiplies the transfer function of gain of the amplifier versus gain control voltage by absolute temperature. A logarithmic compensation circuit removes the non-logarithmic factor of a "1" in the denominator of the transfer function.
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申请公布号 |
US6980052(B1) |
申请公布日期 |
2005.12.27 |
申请号 |
US20030637714 |
申请日期 |
2003.08.08 |
申请人 |
LINEAR TECHNOLOGY CORPORATION |
发明人 |
STROET PETRUS MARTINUS |
分类号 |
H03F1/32;H03F3/45;(IPC1-7):H03F3/45 |
主分类号 |
H03F1/32 |
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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