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用国内线性集成电路做低频设大器噪声指标略差一些。然而,众所周知,一个低噪声放大器的噪声指标主要决定于输入级,在设计低噪声放大器时,要尽量降低输入级的噪声。如果把线性集成电路与合适的输入级
Use the domestic linear integrated circuit to make low-noise amplifier noise index slightly worse. However, it is well-known that the noise figure of a low-noise amplifier mainly depends on the input stage. When designing a low-noise amplifier, the input stage noise should be minimized. If the linear integrated circuits and the appropriate input stage