パラレル結合伝送線路共振器フィルタの新しい設計方法  [in Japanese] New Design Method of Parallel-Coupled Transmission Line Resonator Filters  [in Japanese]

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Author(s)

Abstract

本論文では、パラレル結合伝送線路共振器フィルタに対し、回路解析を行った上で、この種のフィルタが実現可能な等リップルチェビシェフ特性をこれまでの設計理論と異なる関数で適切に表現した。その結果、共振器の数N個に対して、フィルタの通過域内ではN +2個の反射零点が得られ、所望の帯域幅と等リップル特性を実現可能にした。5個の共振器を持つフィルタを設計例とし、等価回路上とマイクロストリップ線路上で設計したフィルタの特性より、提案した設計理論と手法の有効性を実証した。また、従来の設計法と比較することで、本論文の設計法によるフィルタの特性の明らかな改善を明示した。

In this paper, a novel equal-ripple Chebyshev type characteristic function of the parallel-coupled transmission line resonator filter is proposed, which makes the design of the filter possible to obtain N+2 reflection zeros in its passband when N transmission line resonators are used. Moreover, shortcomings associated with conventional design methods of this type of filters, like the reduction of passband bandwidth and the unequal passband ripples, are avoided by the method of this paper. A design example using five parallel-coupled transmission line resonators is provided, and the filter responses obtained by both a circuit simulator and an electromagnetic simulator validate the suggested theory and design method. Significant improvements in the filtering characteristics of the filter designed using the current method over conventional ones are also clearly shown by the results given in the paper.

Journal

  • IEICE technical report

    IEICE technical report 111(65), 39-44, 2011-05-19

    The Institute of Electronics, Information and Communication Engineers

References:  9

Codes

  • NII Article ID (NAID)
    110008726087
  • NII NACSIS-CAT ID (NCID)
    AN10013185
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09135685
  • NDL Article ID
    11116853
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  NDL  NII-ELS 
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