发明名称 |
High efficiency feed-forward RF power amplifier with predistortion enhancement |
摘要 |
An RF power amplifier linearization architecture contains main and auxiliary path RF amplifiers. A distortion-inverting circuit extracts the distortion component from the output signal of the main amplifier and combines it with a delayed sample of the RF input signal to drive an auxiliary path RF amplifier, via a predistorter. An output quadrature hybrid combines the output of the main and auxiliary path amplifiers. The cascading of the distortion-inverting circuit with the predistorter compensates for the non-linear behavior of the auxiliary path RF power amplifier thereby producing a composite signal at the output quadrature hybrid, in which RF carrier components from each amplifier combine constructively while distortion components cancel.
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申请公布号 |
US6104241(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19990356166 |
申请日期 |
1999.07.16 |
申请人 |
SPECTRIAN |
发明人 |
COVA, ARMANDO C.;MUCENIEKS, LANCE T. |
分类号 |
H03F3/68;H03F1/00;H03F1/26;H03F1/32;H03F3/20;H04B1/04;H04K1/02;(IPC1-7):H03F1/26 |
主分类号 |
H03F3/68 |
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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