片側接地の虚数抵抗を用いた複素RiCRフィルタの一構成

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2019/01/01

タイトル(英語): Synthesis of a Complex RiCR Filter Using Grounded Imaginary Resistors

著者名: 藤井　達哉（筑波大学　システム情報工学研究科），庄野　和宏（筑波大学　システム情報工学研究科）

著者名(英語): Tatsuya Fujii (Graduate School of Systems and Information Engineering, University of Tsukuba), Kazuhiro Shouno (Graduate School of Systems and Information Engineering, University of Tsukuba)

キーワード: アナログ，フィルタ，複素，RiCR，片側接地の虚数抵抗　　analog，filter，complex，RiCR，grounded imaginary resistor

要約(英語): In this paper, a synthesis of a complex RiCR filter is proposed. The proposed prototype filter includes terminating resistors, floating capacitors and grounded imaginary resistors only. Because the proposed RiCR filter includes no floating imaginary resistors, we can reduce the active elements when we realize the filter using OTA's and capacitors. The proposed prototype filter is obtained through a frequency transformation and an equivalent transformation using imaginary gyrators. Using imaginary gyrators composed of imaginary resistors, we can transform all the inductors into capacitors. The condition for reducing the floating type imaginary resistors is described. The proposed method is based on symmetry of the circuit configuration. The proposed method can be applied to not only odd-order filters but also even-order filters. As an example, a 5th-order complex RiCR filter is designed. The proposed filter is compared with the conventional ones from the view points of the gain characteristics, the number of the required elements and element value spread.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.139 No.1 （2019） 特集：電子回路関連技術

本誌掲載ページ: 2023/02/11 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/139/1/139_2/_article/-char/ja/