一种新的基于特征值法的六端口自校准方法研究  

New six-port self-calibration method based on eigenvalues

作　　者：张翠翠[1] 王益[1] 王建忠[1] Zhang Cuicui;Wang Yi;Wang Jianzhong(Metrology and Testing Center,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院计量测试中心

出　　处：《仪器仪表学报》2018年第5期40-47,共8页Chinese Journal of Scientific Instrument

摘　　要：为避免传统NBS自校准算法中存在的迭代和不收敛问题,提出了一种基于矩阵特征值理论的微波六端口自校准方法,该方法只需对校准模型进行简单矩阵变化即可求得自校准矩阵,便于实现,同时计算结果准确可靠;依据该方法,采用微带电路分别设计制作了六端口电路和自校准件,并搭建了微波六端口法相位测量系统,系统测量结果表明,该自校准方法可有效修正六端口电路的非理想性,提高六端口电路的相位测量准确度。修正之后的六端口相位测量系统在0°~180°测量范围内,相位测量误差小于1.6°,并具有结构紧凑、稳定性高的特点,可广泛应用于各类接收机及频率、相位测量系统中,具有较强的推广意义。To avoid the iterative and non-convergence problems of the traditional NBS self-calibration algorithm,a self-calibration method is proposed based on the matrix eigenvalue theory. The self-calibrated matrix can be obtained by performing a simply matrix change on the calibration model. The matrix can be easily achieved and the calculation result is accurate and reliable. According to this method,a six-port circuit and a self-calibration device are designed and realized by microstrip-circuit. A microwave six-port phase measurement system is built. The system measurement results show that the self-calibration method can effectively correct the non-ideality of the sixport circuit. The accuracy of the six-port phase measurement system is improved. The phase measurement error of the modified six-port phase measurement system is less than 1. 6° in the measurement range of 0° to 180°. The phase measurement system has the advantages of simple structure and high stability. The proposed method can be widely adopted in various receiver,frequency and phase measurement systems. It has a strong sense of promotion.

关 键 词：相位测量 六端口 自校准 特征值 

分 类 号：TM93[电气工程—电力电子与电力传动] TH873[机械工程—仪器科学与技术]