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利用注入耦合振荡器阵列直接实现非线性接收波束合成,具有旁瓣低的优点,但难以实现接收波束扫描。因此提出了一种非线性有源天线阵接收的新技术,采用耦合振荡器阵列作为本振对接收信号进行混频,在中频进行波束合成。由于阵列单元间相位差可控,能实现接收波束扫描,还可用于生成和差接收波束。实验表明该技术可用于构建非线性有源天线阵的接收系统。
The injection coupled oscillator array is used to realize nonlinear receive beamforming directly, which has the advantage of low sidelobe, but it is difficult to realize receive beam scanning. Therefore, a new technique of receiving nonlinear active antenna array is proposed. The coupled oscillator array is used as the local oscillator to mix the received signal and perform the beamforming at the intermediate frequency. Receive beam scanning can be achieved due to the controllable phase difference between the array elements and can also be used to generate and subtract receive beams. Experiments show that the technology can be used to construct a nonlinear active antenna array receiving system.