相反，联邦通信委员会已将数字转换作为一个契机，好释放大量带宽给他人使用。

Instead, the FCC has used the switch to digital as an opportunity to liberate huge swathes of bandwidth for others to use.

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受限于DDS芯片的调频转换速率，在大带宽下，DDS产生的线性调频信号相比理论信号可能存在频率失真。

Compared to the theory signal, the chirp produced by DDS under large bandwidth, may have frequency distortion due to the limited chirp-rate.

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分析了泵浦光的谱宽以及测量所选用的滤波器的带宽对下转换产生的信号光和闲置光分布范围影响。

We theoretically analyzed the effect of both pump and detection bandwidth to the distribution range of photon pairs generated by SPDC process.

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