微波无源电路软件校准技术的研究与应用

发布时间：2018-12-31 08:32

【摘要】：微波无源集成电路中,当电路的工作频率处于微波或者毫米波频段时,在馈线和激励源之间会产生误差效应,当无源电路器件的实际响应与误差效应在同一个数量级的时候,则需要校准。因此,本文对微波无源电路不连续性结构进行校准分析,目的是去除误差效应,得到更为准确的电路网络参数。首先是使用直通-反射-传输线校准方案建立模型,将校准方法编入脚本程序中,通过运行脚本程序,可以得到不连续性平面即核心电路的参数。再次是使用短路开路校准方案,根据之前推导的校准公式,运行校准程序,得到校准后的网络参数。最后将两种方法对不同种结构进行校准对比,并与文献中的结果进行比对,通过对比两种校准方法的校准精度,可以更好优化设计不连续性结构。本文选择了四个微带二端口不连续性平面结构,即谐振器不连续性结构、低通滤波器不连续性结构、间隙不连续性结构以及SIW不连续性结构。分别用两种校准方法来进行校准,并推广到多端口网络不连续性结构,可以通过奇偶模激励法结合二端口校准方法进行多端口数值校准,验证了低频时校准方法的可行性和通用性,从而可以很大程度上提高了微波电路结构的设计效率。
[Abstract]:In microwave passive integrated circuits, when the operating frequency of the circuit is in the microwave or millimeter wave frequency band, there will be an error effect between the feeder and the excitation source, and when the actual response of the passive circuit device and the error effect are in the same order of magnitude, It needs to be calibrated. Therefore, the discontinuity structure of microwave passive circuits is calibrated and analyzed in order to remove the error effect and obtain more accurate circuit network parameters. First, the calibration scheme of direct-reflection-transmission line is used to build the model, and the calibration method is programmed into the script program. By running the script program, the parameters of the discontinuity plane, that is, the core circuit, can be obtained. Thirdly, using the short-circuit open-circuit calibration scheme, the calibration program is run according to the calibration formula derived before, and the network parameters after calibration are obtained. Finally, the two methods are used to calibrate the different structures, and the results are compared with the results in the literature. By comparing the calibration accuracy of the two methods, the design of discontinuous structures can be better optimized. In this paper, four microstrip two-port discontinuous planar structures are selected, that is, resonator discontinuity structure, low-pass filter discontinuity structure, gap discontinuity structure and SIW discontinuity structure. Two calibration methods are used to calibrate the multi-port network discontinuities, which can be calibrated by the odd-even mode excitation method combined with the two-port calibration method. The feasibility and versatility of the low frequency time calibration method are verified, and the design efficiency of microwave circuit structure can be improved to a great extent.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN454

【相似文献】