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发明授权
US09484871B1 Complex bandpass filter having a transfer function with two poles 有权
具有两极传递函数的复带通滤波器

Complex bandpass filter having a transfer function with two poles
摘要：
In some implementations, a filter circuit includes a first signal path that includes a first amplifier and a second signal path that includes a second amplifier. The first signal path is configured to receive a first component of a complex signal and provide a filtered version of the first component of the complex signal. The second signal path is configured to receive a second component of the complex signal and provide a filtered version of the second component of the complex signal. The first signal path before the first amplifier is coupled to the second signal path before the second amplifier. The first signal path after the first amplifier is coupled to the second signal path before the second amplifier. The second signal path after the second amplifier is coupled to the first signal path before the first amplifier.
摘要（中）：

在一些实现中，滤波器电路包括第一信号路径，其包括第一放大器和包括第二放大器的第二信号路径。 第一信号路径被配置为接收复信号的第一分量并且提供复信号的第一分量的滤波版本。 第二信号路径被配置为接收复信号的第二分量并且提供复信号的第二分量的滤波版本。 第一放大器之前的第一信号路径在第二放大器之前耦合到第二信号路径。 第一放大器之后的第一信号路径在第二放大器之前耦合到第二信号路径。 第二放大器之后的第二信号路径在第一放大器之前耦合到第一信号路径。

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