针对低功耗电路设计的需求，提出了一种低功耗约束下CMOS低噪声放大器的设计方法，并与传统的设计方法进行了对比。

A design approach for low power CMOS low noise amplifier (LNA) is presented and it is compared with the traditional LNA design method.

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与一些音量控制置于输入端的电路不同，这个前级放大器的特征噪声能够随同信号一起衰减。

Any noise characteristic of the preamp circuit is attenuated along with the signal, unlike circuits where the volume control is before the input.

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电路采用电容负反馈互导放大器(CTIA)及相关双取样(CDS)结构，有利于减小电路的噪声。

The adoption of capacitor feedback transimpedance amplifier (CTIA) and correlated double sampling (CDS) structure helps to reduce the noise of the circuit.

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