The design, development and fabrication of compact microstrip ring-hybrid couplers are presented in the present paper. In order to obtain miniaturization, λ/4 microstrip lines in a conventional microstrip ring-hybrid are equivalently substituted with quarter-wavelength supershape transmission lines. The results show that almost 74% size reduction can be achieved as compared to a conventional ring-hybrid. For verification purpose, a sample prototype has been designed, manufactured and tested. The fabricated compact ring-hybrid coupler operates at 1.3 GHz with low amplitude and phase imbalances. The acceptable agreement between the measurement and stimulation results validates the performance of presented coupler. The proposed ring-hybrid is compact, simple, single layer, cheap and suitable for planar fabrication for utilizing in modern communication systems.

本文介绍了紧凑型微带环混合耦合器的设计、开发和制造。为了获得小型化，λ传统微带环混合电路中的 /4 微带线等效地替换为四分之一波长超形状传输线。结果表明，与传统的环状混合材料相比，可以实现近 74% 的尺寸减小。出于验证目的，设计、制造和测试了样品原型。制造的紧凑型环形混合耦合器在 1.3 GHz 下工作，具有低幅度和相位不平衡。测量和刺激结果之间可接受的一致性验证了所提供耦合器的性能。所提出的环形混合结构紧凑、简单、单层、便宜并且适用于平面制造以用于现代通信系统。