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Computer-aided synthesis and diagnosis of filters consisting of coupled-resonators and group delay equalizers.

机译：由耦合谐振器和群时延均衡器组成的滤波器的计算机辅助合成和诊断。

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摘要

Rapid advance of modern satellite and mobile communication systems has imposed extraordinarily stringent specifications on high quality and low manufacturing cost microwave components. Systematic synthesis and diagnosis procedures are necessary for optimum design and post-manufacturing tuning. This dissertation is devoted to the synthesis, diagnosis and tuning of microwave coupled-resonators filters and group delay equalizers.; A systematic synthesis and design procedure, consisting of solving the approximation problem through optimization and synthesis, for microwave coupled resonators group delay equalizers is presented. The effect of the cascading device (circulator or 3dB hybrid coupler) on the flatness of the group delay response is investigated with comparisons made between the externally- and self-equalized structures. A deterministic finite-step tuning algorithm is developed based on the synthesis of the filter network with output short-circuited. The loading effect to the last cavity due to the shift in the reference plane is addressed and effectively removed. A semi-automated tuning procedure, being able to reduce the time required for tuning by at least 50%, is developed through the integration of the algorithm with proper interface development. A new parameter extraction procedure, which eliminates the complexity, inefficiency and non-uniqueness of traditional optimization approach, for symmetric coupled resonators filters is presented. This powerful procedure can also predict the unavoidable spurious couplings between nearby resonators in compact-sized filters. Good agreement with the experimental results demonstrates the feasibility and power of the synthesis and diagnosis procedures.
机译：现代卫星和移动通信系统的飞速发展对高质量和低制造成本的微波组件提出了极其严格的规范。系统的综合和诊断程序对于优化设计和制造后调试是必不可少的。本文致力于微波耦合谐振滤波器和群时延均衡器的综合，诊断和调谐。提出了一种系统的综合和设计程序，包括通过优化和综合来解决微波耦合谐振器群时延均衡器的近似问题。通过在外部和自平衡结构之间进行比较，研究了级联设备（循环器或3dB混合耦合器）对群延迟响应平坦度的影响。基于输出短路的滤波器网络的综合，开发了确定性的有限步长调整算法。解决并有效消除了由于参考平面的移动而对最后一个腔体造成的载荷效应。通过将算法与适当的接口开发相集成，可以开发出一种半自动的调整过程，该过程可以将调整所需的时间至少减少50％。提出了一种新的参数提取程序，该程序消除了对称耦合谐振器滤波器的传统优化方法的复杂性，低效率和非唯一性。这种强大的过程还可以预测紧凑型滤波器中附近谐振器之间不可避免的寄生耦合。与实验结果很好的吻合证明了合成和诊断程序的可行性和力量。

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  • 作者

    Hsu, Heng-Tung.;

  • 作者单位

    University of Maryland College Park.;

  • 授予单位 University of Maryland College Park.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 213 p.
  • 总页数 213
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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