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从Engen准则出发,探讨了适应具体设计对象的最小误差约束条件。以此为指南,选用对称双环五端口和定向耦合器组成S波段微带型六端口结。具体分析研究了定向耦合器数的选择,对称五端口的结构形式、宽带匹配,优化设计法及工艺实现问题。采用两级优化,具体设计并加工出了可在一个倍频程内实现匹配的微带型s波段对称五端口结。
Based on the Engen criterion, the minimum error constraints to adapt to a specific design object are discussed. Using this as a guideline, the S-band microstrip six-port junction is made up of a symmetrical double ring five-port and directional coupler. This paper analyzes the choice of the number of directional couplers, the structure of symmetrical five ports, the matching of broadband, the optimization design and the realization of the process. Using two levels of optimization, the specific design and processing of the microstrip-type s-band symmetrical five-port junction can be achieved in an octave band matching.