发明名称 |
Method and system for reducing non-linearities |
摘要 |
Non-linearities of signal-generation circuits that typically include a series arrangement of a modulator and a power amplifier are reduced by connecting a measurement circuit to an output of the signal-generation circuit and at another point along a signal path of the signal-generation circuit. A predistorted input signal is applied to an input of the signal-generation circuit. The pre-distorted signal includes a constant component and a time-varying component, such that the predistorted input signal excites non-linear modes of the signal-generation circuit. The measurement circuit is balanced so that a portion of the predistorted input signal that passes through the measurement circuit does not include a time-varying component and therefore does not excite non-linearities of the measurement circuit. Adjustments are made to the predistorted input signal in order to reduce non-linearities of the signal-generation circuit.
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申请公布号 |
US6566948(B1) |
申请公布日期 |
2003.05.20 |
申请号 |
US20020084702 |
申请日期 |
2002.02.26 |
申请人 |
AGILENT TECHNOLOGIES, INC. |
发明人 |
BRAITHWAITE RICHARD NEIL |
分类号 |
H03C1/06;H03F1/32;H04B1/04;(IPC1-7):H03F1/26 |
主分类号 |
H03C1/06 |
代理机构 |
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代理人 |
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地址 |
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