方向回溯相位共轭原理及射频/中频隔离技术

The Theory of Phase Conjugation and Technology of RF/IF Isolation Using in Retrodirective Antenna Array

为了理解相位共轭原理在方向回溯中的应用以及混频过程中射频信号泄漏对天线回溯准确性的影响,给出了相位共轭信号完成方向回溯功能的原理,以PON阵列天线为基础分析了混频实现相位共轭的过程,引出射频泄漏导致的方向性误差。最后阐述了采用镜像抑制混频器改善RF/IF信号隔离度的方案,抑制了射频泄漏信号对天线阵回溯特性的影响。

In order to understand the theory of phase conjugation using in Retrodirective Antenna and the impact on the accuracy of Retrodirective Antenna produced by RF signal leakage during the mixing process,we discuss the how the phase conjugation signal complete the function of Retro direction,and then the process of achieving phase conjugation by mixing based on PON Array is discussed,putting forward the direction Error caused by RF leakage signal.At last,we discourse the program to improve the isolation of RF/IF signals which is based on the mirror image suppression mixer,suppressing the impact produced by the RF leakage signal on antenna array's Retrodirective function.