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Three New Rat-Race Couplers with Defected Microstrip and Ground Structure (DMGS)

机译:具有变形微带和地面结构(DMGS)的三种新型鼠种族耦合器

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In this paper, three new types of rat-race ring couplers with defected microstrip and ground structure (DMGS) are presented and one type is fabricated to validate the simulation results. The proposed structures have the advantages of size reduction as well as 3rd harmonic suppression. Embedding the DMGS section increases the slow-wave factor (SWF) and as a result the resonant frequency of the coupler decreases, which sets the stage for size reduction. In addition, insertion losses of the 3rd harmonic of the proposed couplers are reduced to 35 dB. After optimizing with genetic algorithm (GA), one type is fabricated. Good agreement between the simulation and measurement results is observed. Simulations are carried out using HFSS 13 and the designed coupler is validated by measurement.
机译:本文提出了三种新型的具有微带线和接地结构缺陷的鼠类环耦合器(DMGS),并制造了一种类型的鼠环耦合器以验证仿真结果。所提出的结构具有减小尺寸以及抑制三次谐波的优点。嵌入DMGS部分会增加慢波因数(SWF),结果耦合器的谐振频率会降低,从而为减小尺寸奠定了基础。另外,所提出的耦合器的三次谐波的插入损耗降低到35 dB。用遗传算法(GA)进行优化后,便制作出一种类型。观察到仿真与测量结果之间的良好一致性。使用HFSS 13进行仿真,并通过测量验证设计的耦合器。

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