中文摘要：

提出了一种基于自主设计小型超宽带天线的微波稳健波束形成（RCB）成像肿瘤检测系统.仿真结果表明,该检测系统对肿瘤反射信号有很高的敏感度.在简单平面模型和核磁共振成像图（MRI）导出模型中进行仿真检测实验,并将天线阵列接收信号用RCB算法进行成像处理.从乳房重构图像中能够得到正确的肿瘤位置及大小信息,实现了平面模型中最小直径3 mm和MRI导出模型中最小直径4 mm的肿瘤检测,证实了该检测系统用于早期乳腺肿瘤检测的可行性.

英文摘要：

An ultra-wideband（UWB） microwave robust Capon beamforming imaging system is presented based on a selfdesigned compact UWB antenna for early breast cancer detection. Simulation results show that the proposed detection systemissensitivetotumorresponse. Simulatedtumordetectionexperimentsarecarriedoutinbothsimpleplanarbreast model and magnetic resonance imagining（MRI）-derived model using the antenna array. Robust Capon beamforming algorithm is employed to reconstruct the breast image. Successful detection of 3-mm-diameter tumor is achieved in the planar model and the same detection result of 4-mm-diameter tumor is achieved in the MRI-derived model. The right information of the tumor can be obtained from the imaging results, which demonstrates the feasibility of the proposed system in early breast cancer detection.