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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >A quasi-analytic synthesis methodology for spiral defected microstrip compact bandstop filters
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A quasi-analytic synthesis methodology for spiral defected microstrip compact bandstop filters

机译：螺旋偏差微带紧凑型滤波器的准分析合成方法

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摘要

A new quasi-analytical synthesis method is presented for designing spiraldefected microstrip structures (DMS). A comprehensive analysis based on circuitmodels, mathematical relations, and extensive simulations is used toachieve an exact, straightforward, and tunable wide-range frequency designprocess. The design process benefits of some novel formulas derived based onthe overall form of resonance frequency functions and the study of extensivesimulations. We used the Levenberg Marquardt Iteration (LMI) algorithm forthe derivation of closed-form formulas. The resonance frequency of a spiralDMS called notch frequency can be independently tuned in a large frequencyspan by employing the proposed method. The designed spiral DMSs and thenew synthesis method can be applied to applications such as filters, antennas,amplifiers, and multipliers. The proposed spiral DMS design/synthesis methodand the derived closed-form formulas are verified and validated by simulationsand fabrication of six filters with different geometries and specifications. Acomparison of the simulation and measurement results of the fabricated filtersproves the accuracy and validity of the proposed design method and formulaswhere the relative effort is less than 0.38%. The return loss and group delay ofthe filters are less than 0.48 dB and 0.5 ns, respectively.
机译：提出了一种用于设计螺旋的新的准分析合成方法缺点微带结构（DMS）。基于电路的综合分析模型，数学关系和广泛的模拟用于实现精确，简单，可调和可调宽频率设计过程。基于的一些新型公式的设计过程益处共振频率功能的整体形式和广泛的研究模拟。我们使用Levenberg Marquardt迭代（LMI）算法封闭式公式的推导。螺旋的共振频率DMS称为Notch频率可以在大频率下独立调谐通过采用所提出的方法来跨度。设计的螺旋DMSS和新的合成方法可应用于滤波器，天线等应用，放大器和乘法器。提出的螺旋DMS设计/合成方法并且通过模拟验证并验证了衍生的闭合式公式并制造具有不同几何形状和规格的六个过滤器。一种仿真滤波器的仿真和测量结果的比较证明了所提出的设计方法和公式的准确性和有效性相对努力小于0.38％的地方。回报损失和集团延迟过滤器分别小于0.48dB和0.5 ns。

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