Microwave pulse phase encoding using a photonic microwave delay-line filter.
Microwave pulse phase encoding using a photonic microwave delay-line filter.
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DOI：
10.1364/ol.32.003486
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发表时间：
2007-12
期刊：
影响因子：
3.6
通讯作者：
Yitang Dai;J. Yao
中科院分区：
文献类型：
--
作者：
Yitang Dai;J. Yao
提出了一种利用非相干光子微波延迟线滤波器进行微波脉冲相位编码的新技术，并进行了实验验证。与任何相邻抽头的时延差相同的常规微波延迟线滤波器不同，该滤波器具有不同的时延差。通过适当地调整时延差来产生具有所需码型的相位编码微波脉冲。所生成的相位码的码片数由滤波抽头的个数确定，每个码片的相移由对应的时延差确定。通过实验验证了该方法的有效性。实验上演示了二进制和四进制相位编码脉冲的产生。
A novel technique to perform microwave pulse phase encoding using an incoherent photonic microwave delay-line filter is proposed and experimentally demonstrated. Being different from a regular microwave delay-line filter, in which the time-delay differences are identical between any adjacent taps, the proposed filter has nonidentical time-delay differences. A phase-encoded microwave pulse with the required code pattern is generated by properly adjusting the time-delay differences. The chip number of a generated phase code is determined by the number of the filter taps, and the phase shift of each chip is determined by the corresponding time-delay difference. The proposed technique is verified by experiments. The generation of binary and quaternary phase-coded pulses is experimentally demonstrated.