集中定数素子を用いた広帯域電力分配器の構成法

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: 2020/03/01

タイトル(英語): Design of Broadband Power Divider Using Lumped-Elements

著者名: 長野　健介（兵庫県立大学工学研究科），河合　正（兵庫県立大学工学研究科），榎原　晃（兵庫県立大学工学研究科）

著者名(英語): Kensuke Nagano (Graduate School of Engineering, University of Hyogo), Tadashi Kawai (Graduate School of Engineering, University of Hyogo), Akira Enokihara (Graduate School of Engineering, University of Hyogo)

キーワード: 電力合成/分配器，集中定数回路，LCはしご形回路，広帯域，VHF帯　　power combiner/divider，lumped-element circuit，LC-ladder circuit，broadband，VHF-band

要約(英語): Microwave power dividers play important roles in microwave circuit systems. As an in-phase divider, the Wilkinson power divider which consists of two quarter-wavelength transmission lines and a resistor connected between two output ports is well known. However, the circuit size becomes large because this divider is designed based on a distributed circuit theory. This problem is extremely serious at low frequency regions such as VHF and UHF bands. Although some power dividers utilizing Π- or T-networks have been already reported in order to overcome this problem, these dividers have relatively narrow bandwidths. On the other hand, authors have been also proposed broadband lumped-element power dividers utilizing LC-ladder circuits.This paper describes a design method of multi-section LC-ladder dividers at VHF band. The multi-section LC-ladder divider is a broadband lumped-element power divider composed of multi-section LC-ladder circuits and an isolation resistor. By designing the divider based on multi-section impedance transformer and L-type matching techniques, broadband characteristics of a relative bandwidth of over 100% can be obtained at VHF band. Electromagnetic simulation and experiment for the designed divider have been performed in order to verify the design procedure. The measured results of the fabricated LC-ladder divider at a center frequency of 178MHz utilizing commercial chip elements are good agreement with simulation results.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.3 （2020） 特集Ⅰ：スマートシステムと計測・制御技術―IoT時代の計測・制御技術―　特集Ⅱ：産業応用をにらんだ高周波システム・電子デバイス・回路・材料技術

本誌掲載ページ: 342-347 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/140/3/140_342/_article/-char/ja/