Microwave photonic channelized receiver is one of the important means to realize broadband radio frequency (RF) signal reception, and it also has great application potential in the fields of radar systems and electronic warfare. In view of the above, a microwave photonic channelizer with 66-subchannels based on acousto-optic frequency shifter (AOFS) is proposed. The 11-line optical frequency comb (OFC) used in this scheme is generated via one phase modulator. The 33 optical local oscillators can be obtained using two AOFSs to shift the frequency of 11-line OFC up and down. The 33 optical local oscillators and broadband RF signal are image-rejected and downconverted in the I / Q receiver and output by 66 subchannels with a bandwidth of 500 MHz. The simulation results verify the complete reception of 3 to 36 GHz wideband RF signal, and the spurious-free dynamic range of the system can reach 116.3 dB · Hz2/3.

中文翻译：

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基于声光移频器的66通道宽带光子射频通道器

微波光子信道化接收机是实现宽带射频（RF）信号接收的重要手段之一，在雷达系统和电子战领域也具有巨大的应用潜力。有鉴于此，提出了一种基于声光移频器(AOFS)的66子信道微波光子信道器。该方案中使用的 11 线光频梳 (OFC) 是通过一个相位调制器生成的。使用两个AOFS上下移动11线OFC的频率可以获得33个光本地振荡器。33 个光本地振荡器和宽带射频信号在 I/Q 接收器中进行镜像抑制和下变频，并由带宽为 500 MHz 的 66 个子通道输出。仿真结果验证了 3 至 36 GHz 宽带射频信号的完整接收，