发明名称 |
External optical modulation system comprising a predistorter |
摘要 |
The present invention relates to a method and to a signal predistorter circuit for eliminiating the nonlinearities in the input/output characteristics of nonlinear stages, in particular for eliminating the third-order nonlinearities. More particularly, it relates to a method and to a predistorter circuit for external optical modulators of television signals. The method for predistortion of a signal of variable amplitude comprises the phases of: delivering the said signal to at least one first distorter circuit; biasing the said at least one first distorter circuit; distorting the said signal in the said at least one first distorter circuit; characterized in that the said phase of biasing the said at least one first distorter circuit comprises the phase of maintaining a substantially constant preset voltage value on varying the amplitude of the said signal at the said at least one first distorter circuit.
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申请公布号 |
US6313701(B1) |
申请公布日期 |
2001.11.06 |
申请号 |
US19990440681 |
申请日期 |
1999.11.12 |
申请人 |
PIRELLI CAVI E SISTEMI S.P.A. |
发明人 |
MUSSINO FRANCO;NOTARGIACOMO MASSIMO;GOBETTI GIANLUCA;RAVASIO GIUSEPPE;ZAMMARCHI CLAUDIO |
分类号 |
G02F1/01;H04B1/62;H04B10/02;H04B10/04;H04B10/06;H04B10/142;H04B10/152;H04B10/155;H04B10/18;H04B10/50;H04B10/58;H04N7/22;(IPC1-7):H03F1/26 |
主分类号 |
G02F1/01 |
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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