公开(公告)号：US06208203B1

公开(公告)日：2001-03-27

申请号：US09329291

申请日：1999-06-10

申请人： Chan Kook Jung ,  Sang Hyun Park ,  Jin Hyoung Choi ,  Jong Hwa Park ,  Sin Jae Kim

发明人： Chan Kook Jung ,  Sang Hyun Park ,  Jin Hyoung Choi ,  Jong Hwa Park ,  Sin Jae Kim

IPC分类号： H03F368

CPC分类号： H03F3/72 ,  H03F1/526 ,  H03F2200/198 ,  H03F2200/372 ,  H03F2203/7236 ,  H03F2203/7239

摘要： A low-noise amplifier which is equipped with at least one redundancy circuit which is connected in parallel to an amplifying circuit, so that the low-noise amplifier operates without a significant signal loss even when an abnormality takes place in the amplifying circuit and the amplifying circuit is not replaced or troubleshooted. The low-noise amplifier includes a redundancy circuit (30) effectively operable instead of an amplifying circuit (24) when the amplifying circuit (24) is in an abnormal condition, and at least one switch (22) activates the redundancy circuit (30) when the amplifying circuit (24) is abnormal. In a preferred embodiment, the redundancy circuit (30) includes a transmission line (32) for bypassing an input RF signal when the amplifying circuit (24) is in an abnormal condition. In an alternative, the redundancy circuit (30) includes a redundant amplifying circuit (34), so that the redundant amplifying circuit (34) can amplify the input RF signal in place of the amplifying circuit (24).

摘要翻译： 一种低噪声放大器，其配备有与放大电路并联连接的至少一个冗余电路，使得低噪声放大器即使在放大电路和放大器中发生异常时也没有显着的信号损失而工作 电路没有更换或故障排除。 低放大器包括当放大电路（24）处于异常状态时有效地可操作地代替放大电路（24）的冗余电路（30），并且至少一个开关（22）激活冗余电路（30） 当放大电路（24）异常时。 在优选实施例中，冗余电路（30）包括用于当放大电路（24）处于异常状态时旁路输入RF信号的传输线（32）。 或者，冗余电路（30）包括冗余放大电路（34），使得冗余放大电路（34）可以放大输入RF信号来代替放大电路（24）。