输入信号作用于一个以模拟调制器为基础的专有可编程增益前端。
The input signal is applied to a proprietary programmable gain front end based around an analog modulator.
作为光接收机前端的关键部分，限幅放大器要求具有高增益，足够带宽以及较宽的输入动态范围。
As the key component of optical receiver, design of a high-speed limiting amplifier with high gain, broadband and a wide dynamic input range is required.
接收射频前端的高增益和低噪声系数要求两级低噪放级联使用，通过计算低噪放的噪声估量确定了连接方式。
For the requirement of high gain and low noise figure (NF) of the receiver RF destination, two LNAs most be cascaded, which is determined by each noise calculation of the two different LNAs.
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