高效率放大器

申请公布号：CN100511972C

申请号：CN200480042758.6

申请日期：2004.06.18

申请公布日期：2009.07.08

申请人：

三菱电机株式会社

发明人：堀口健一;中山正敏;高木直

分类号：H03F1/07(2006.01)I;H03F1/32(2006.01)I;H03F3/19(2006.01)I

主分类号：H03F1/07(2006.01)I

代理机构：

中国国际贸易促进委员会专利商标事务所

代理人：吴丽丽

地址：日本东京

摘要：在输入侧分支电路(2)和1/4波长线路(6)之间连接模拟前置补偿电路(5)。由此，因为补偿峰值放大器(7)的非线性失真，所以起到能够改善放大器整体的线性的效果。

主权项：1. 一种高效率放大器，具备：输入信号分支单元，用于对输入信号进行分支；第1放大器，放大由上述输入信号分支单元分支后的一个输入信号；第2放大器，当由上述输入信号分支单元分支后的另一个输入信号的电能大于规定的电能的情况下，放大该输入信号；以及合成电路，合成上述第1放大器的输出信号和上述第2放大器的输出信号，所述高效率放大器的特征在于：把电平限制电路设置在上述第1放大器的前级，该电平限制电路当由上述输入信号分支单元分支后的一个输入信号的振幅上升超过规定电平的情况下，将该输入信号的振幅限制在规定电平以下并输出到上述第1放大器。

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