CAJ | 학술논문

提出一种中心频率为3 GHz单天线近距宽带调频连续波雷达的实现方法，设计了射频单元和中频信号处理电路。采用槽形结构的微带天线并利用微带威尔金森功分器取代传统的环行器双工结构，实现了雷达的宽带应用；通过Blackman加窗的方法对差拍信号进行FFT处理，抑制了天线端口的反射以及发射泄露信号的影响。实验结果表明，该新型近距调频连续波雷达方案是可行的。
제출일충중심빈솔위3 GHz단천선근거관대조빈련속파뢰체적실현방법，설계료사빈단원화중빈신호처리전로。채용조형결구적미대천선병이용미대위이금삼공분기취대전통적배행기쌍공결구，실현료뢰체적관대응용；통과Blackman가창적방법대차박신호진행FFT처리，억제료천선단구적반사이급발사설로신호적영향。실험결과표명，해신형근거조빈련속파뢰체방안시가행적。
This paper presented an implementation method of single antenna short range wideband FMCW radar with mi-crostrip structure, and the radar worked at 3 GHz.Microstrip Wilkinson power dividers were adopted to replace the tradi-tional circulator duplex structure , and a wideband microstrip slot antenna was designed .Blackman window was applied into the frequency beat signal so as to decrease the effect of direct reflection and crosstalk .Experimental results show that the proposed method is feasible .