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本文叙述了一种分支线耦合器的计算机辅助设计方法,它可以降低分支线耦合器的内部阻抗水平,使之便于用微带来制作。采用Fletcher—Powell搜索法使设计最佳化。由于微带线适用的阻抗范围受到严格的限制,本文提出3db耦合器对于各种平衡型元件例如平衡混频器来说是十分有用的。本设计的正确性已在微波及毫米波段为实验所证实。
This article describes a computer-aided design of a branch line coupler that reduces the internal impedance of the branch line coupler and makes it easy to fabricate with microstrip. Optimized design with Fletcher-Powell search. Due to the strict limits on the impedance range suitable for the microstrip line, the proposed 3db coupler is very useful for a variety of balanced components such as balanced mixers. The correctness of this design has been experimentally confirmed in the microwave and millimeter wavebands.