A New Theoretical Approach of Studying Resonances in Single Finline Transitions

Abstract In this article an innovative method of studying and removing the resonances, inherently exhibit by some waveguide to microstrip transitions, is presented. By modeling an equivalent circuit, this new approach allows to obtain the constructive parameters of a finline to microstrip transition, only using the values of the resistance and capacitance components of the equivalent circuit. This procedure will allow small microwave design Companies to realize these transitions only implementing circuit analysis software, and not having to afford electromagnetic analysis software, which are very expensive and time-consuming. A full 3D electromagnetic analysis confirms that the simulation results are in excellent agreement with the results obtained by the new equations discussed in this work.

摘要 本文提出了一种研究并抑制部分波导-微带过渡结构固有谐振的创新方法。该方法通过构建等效电路模型，仅需利用等效电路中电阻与电容元件的参数值，即可获取鳍线（finline）-微带过渡结构的构造参数。此流程可使小型微波设计企业仅需借助电路分析软件即可完成此类过渡结构的研制，无需购置成本高昂且耗时耗力的电磁分析软件。全三维电磁仿真分析验证表明，本文所提出的新型公式所得结果与仿真结果具有极佳的吻合度。