UNIVERSIT E NICE-SOPHIA ANTIPOLIS
UNIVERSIT E NICE-SOPHIA ANTIPOLIS
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尼斯索菲亚安蒂波利斯大学
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. Akansu
中科院分区：
文献类型：
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作者：
B. Ozer;W. Wolf;A. Akansu
微波带通滤波器的设计通常需要对物理设计参数进行优化或微调，以满足频率模板给出的电气指标。在这篇论文中，我们开发模型，以协助设计师在时间效率的分布元件微波滤波器的物理设计。其目的是将这些模型纳入不同的计算机辅助设计（CAD）方法。所谓时间效率设计，我们指的是需要少量电磁（EM）仿真的设计。EM模拟通常代表优化过程中最耗时的步骤。我们提出了不同的建模方法的滤波器的频率响应行为。第一种方法将耦合矩阵建模为物理设计参数的函数，第二种方法将散射（S-）参数建模为物理参数的函数。在正文的第一部分中，我们集中在窄带微波带通滤波器的设计中实现的微带技术。这种滤波器的设计通常基于耦合矩阵理论。该模型的分布元件微波滤波器由一个集总元件电路组成的耦合LC谐振器，谐振在其中心频率附近。这些耦合谐振器电路的行为由耦合矩阵表示。设计过程的第一步是合成一个耦合矩阵（黄金目标），实现满足频率规格的滤波器功能。接下来，通过正确地确定实际微波滤波器的设计参数的尺寸来物理地实现该耦合矩阵。在过去的几年中，已经开发了几种计算机辅助调谐（CAT）方法来优化物理设计参数。这些调谐方法通常从滤波器S参数中提取耦合矩阵，并将其与黄金目标进行比较。耦合矩阵的提取是至关重要的，特别是在允许多个解决方案的耦合拓扑的情况下。
The design of microwave bandpass filter generally requires optimization or finetuning of the physical design parameters in order to meet the electrical specifications given by a frequency template. In this thesis we develop models to assist the designer in the time-efficient physical design of the distributed element microwave filters. The aim is to incorporate these models in different computer-aided design (CAD) methods. By a time-efficient design, we mean a design that requires a low number of electromagnetic (EM) simulations. The EM-simulations typically represent the most time-consuming step during the optimization process. We propose different modeling approaches for the frequency response behavior of the filter. The first approach models the coupling matrix as a function of the physical design parameters and the second approach models the scattering (S-) parameters, again as a function of the physical parameters. In the first part of the text we focus on the design of narrow-band microwave bandpass filters implemented in a microstrip technology. The design of such filters is often based on the coupling matrix theory. It models the distributed element microwave filter by a lumped element circuit consisting of coupled LCresonators that resonate in the vicinity of its center frequency. The behavior of these coupled resonator circuits is represented by a coupling matrix. The first step of the design process synthesizes a coupling matrix (golden goal) realizing a filter function that fulfills the frequency specifications. Next this coupling matrix is physically implemented by correctly dimensioning the design parameters of the actual microwave filter. Over the last few years several computer-aided tuning (CAT) methods have been developed to optimize the physical design parameters. These tuning methods often extract a coupling matrix from the filters S-parameters and compare it to the golden goal. The extraction of the coupling matrix is critical, especially in the case of coupling topologies that allow multiple solutions.