Weighted Distribution Constraint Based Prediction of Available Interval of Coaxial-to-Microstrip Flexible Interconnection

This article presented a weighted distribution constraint (WDC) method to predict the available interval of coaxial-to-microstrip flexible interconnection considering the process fluctuation and thermal deformation. In the proposed method, a piecewise function is used to characterize the interconnection configuration, and a 3-D structure–electromagnetic model of coaxial-to-microstrip flexible interconnection has been established. Then, the key parameters of the interconnection configuration considering the interaction effect are screened by the experimental design and optimization, and the available interval of the interconnection configuration parameters has been derived. Finally, the accuracy of interval prediction is verified by some examples, and the available intervals of the key parameters for interconnection under multiple operating conditions have been further predicted. The proposed WDC method is also suitable for other interconnection for robust design and performance optimization in microwave circuits.