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1. 发明授权

US6148185A Feed-forward amplifying device and method of controlling the same and base station with feed-forward amplifying device 失效
标题翻译：前馈放大装置及使用前馈放大装置控制相同基站的方法
公开(公告)号：US6148185A
公开(公告)日：2000-11-14
申请号：US594828
申请日：1996-01-31
申请人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Tatsuo Furukawa , Norio Tazawa , Yasushi Seino
发明人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Tatsuo Furukawa , Norio Tazawa , Yasushi Seino
IPC分类号： H03F1/32 , H04J1/00 , H04L27/26 , H04B17/00
CPC分类号： H03F1/3235 , H04B17/104 , H04B17/13 , Y02B60/50
摘要： The present invention relates to a feed-forward amplifying device suitable for radio communication systems such as digital automobile telephone. In the feed-forward amplifying device which includes a distortion extracting loop circuit unit including a main amplifier which amplifies a main signal in a main signal system, the distortion extracting loop circuit unit creating a distortion extracting signal by controlling the phase of the main signal the distortion extracting signal obtained by canceling the main signal component of an output from the main amplifier; and a distortion removing loop circuit unit arranged at the rear stage of the main amplifier, the distortion removing loop circuit unit producing only the main signal component from a signal in the main signal system at the rear stage of the main amplifier using the distortion extracting signal obtained by canceling the main signal component, the distortion extracting loop circuit unit executes phase control by shifting a phase control point where the main signal can be most canceled, thus creating the distortion extracting signal. This device can improve the power efficiency with a small back-up of the amplifier and stably produce a low-distortion amplified signal.
摘要翻译：本发明涉及一种适用于数字汽车电话等无线通信系统的前馈放大装置。在包括失真提取环路电路单元的前馈放大装置中，包括放大主信号系统中的主信号的主放大器，失真提取回路电路单元通过控制主信号的相位来产生失真提取信号通过消除来自主放大器的输出的主信号分量而获得的失真提取信号; 以及设置在主放大器的后级的失真消除环路电路单元，失真消除环路电路单元，使用失真提取信号仅在主放大器的后级的主信号系统中的信号中产生主信号分量通过取消主信号分量获得，失真提取回路电路单元通过移位主信号可以被最多地取消的相位控制点来执行相位控制，从而创建失真提取信号。该器件可以通过放大器的小型备份来提高功耗，并稳定地产生低失真放大信号。

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