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不等功率分配器和合成器一般均受到线宽的限制,实际上,在给定的传输介质中,这种线宽可以进行综合处理。对不等功率分配比的实际限制能够通过把一些相同的耦合器合并成一个组合耦合器的方法得到放松。本文所介绍的一般组合设计方法是利用三个藕合器(三端耦合器)产生一个新的三端口线路。导出了组合设计的设计方程,并把它归纳成图解形式。组合设计方法的可实行性通过用内部串联的威尔金森(Wilkinson)耦合器构成一个5.76db差值耦合器得到证实。经过计算机分析,设计了组合线路,最后进行了制造和实验。同时也将组合设计的结果与单个威尔金森藕合器的设计进行了比较。
Unequal power dividers and synthesizers are generally limited by the line width, in fact, in a given transmission medium, this line width can be integrated. The actual limits on unequal power split ratios can be relaxed by combining some of the same couplers into one combined coupler. The general design approach described in this article is to create a new three-port line using three couplers (three-terminal couplers). The design equations for the combined design are derived and summarized in graphical form. The feasibility of the combined design approach was demonstrated by the construction of a 5.76db differential coupler with an in-line series Wilkinson coupler. After computer analysis, the design of the combination of lines, and finally made the manufacture and experiment. The result of the combined design is also compared to the design of a single Wilkinson coupler.