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中文摘要：
针对传统模拟多通道接收机各通道间相位不正交和增益不一致问题,提出了一种基于数字下变频器件AD6654的雷达多通道中频接收机.该接收机将高速数字采样和多通道数字下变频集成到一个芯片,通过数字信号处理器（DSP）芯片对AD6654进行时序控制及关键参数设置.实验表明,该接收机解决了传统模拟接收机各通道间相位不正交和增益不一致问题,实现了雷达回波的多通道无差错接收.
英文摘要：
To solve the problem of non-orthogonal and varied gain between charmels in traditional analog multichannel receivers,a multi-channel radar intermediate frequency （IF） receiver based on AD6654 was proposed.The high-speed digital sampling and multi-channel digital down conversion were integrated into a single chip.The timing of AD6654 was controlled and key parameters were set by the digital signal processor （DSP） chip.Experiments showed that the problems of non-orthogonality and gain inconformity between channels were solved and the radar echo could be implemented exactly.
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