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CN101427462A 自动增益控制电路及低噪声放大电路 无效 - 撤回

自动增益控制电路及低噪声放大电路
摘要：
天线阻尼电路(4)和旁路开关(5)串联连接，并且，该串联电路和LNA(3)并联连接，由此，LNA(3)工作时，不形成旁路开关(5)与LNA(3)串联连接的信号路径，能够防止旁路开关(5)的导通阻抗造成LNA(3)的噪声指数劣化。
摘要（英）：

An antenna dumping circuit (4) is connected in series to a bypass switch (5), while this series circuit is connected in parallel to an LNA (3). In this way, during operation of the LNA (3), no signal path occurs that connects the bypass switch (5) in series to the LNA (3), so that the noise factor of the LNA (3) can be prevented from being degraded by the ON-resistance of the bypass switch (5).

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