Study on the modal theory applied to small antennas

2013 Fiscal Year Final Research Report

• Project/Area Number: 23560476
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Kanazawa Institute of Technology
• Principal Investigator: NOGUCHI Keisuke 金沢工業大学, 工学部, 教授 (10278103)
• Project Period (FY): 2011 – 2013
• Keywords: 移動通信 / 小形アンテナ / 広帯域化 / マルチバンド化 / モード理論 / 特性モード

Research Abstract

In order to improve characteristics of small antennas applied to mobile terminals such as mobile phone and tablet PC, we have studied antenna designs with the characteristic modes and the multi-conductor transmission line mode theory (the modal theory). The modal theory can be applied to analyze small antennas consisting of several conducors, and the theory contributes to design small antennas with wideband or multiband characteristics. As results, we investigated an inverted-L antenna (ILA) consisting of two conductors, and designed wideband/dual-band ILA with the modal theory. Design process for small antennas using the modal theory can be cleared. Finally we have presented the results in international conferences.

Research Products

• [Journal Article] Transmission line mode analysis of wideband/multiband antennas consisting of coupled conductors (2013)
  • Author(s): K.Noguchi, S.Betsudan, S.Makino, T.Hirota and K.Itoh
  • Journal Title: Proc. IEEE-APS Topical Conf. on Antennas and Propag. in Wireless Communications (APWC) Pages: 272-275
  • Peer Reviewed
• [Journal Article] Theoretical bandwidth of folded small antennas (2013)
  • Author(s): K.Noguchi, S.Makino, T.Hirota, K.Itoh and S.Betsudan
  • Journal Title: Proc. IEEE Int. Symp. on Antennas and Propag Pages: 766-767
  • Peer Reviewed
• [Presentation] 2周波共用折返し逆L形アンテナ (2013)
  • Author(s): 野口啓介,別段信一,牧野滋,廣田哲夫,伊東健治
  • Organizer: 信学ソ大
  • Place of Presentation: 福岡工大(B-1-61)
  • Year and Date: 2013-09-17
• [Presentation] 折返し逆L形アンテナの最大比帯域幅 (2013)
  • Author(s): 野口啓介,別段信一,牧野滋,廣田哲夫,伊東健治
  • Organizer: 信学技報
  • Place of Presentation: 大分県別府国際コンベンションセンター(AP2013-17)
  • Year and Date: 2013-05-16
• [Presentation] 直列共振特性を持つアンテナのQ値と放射効率 (2013)
  • Author(s): 野口啓介,京村治孝,小林亮介,人見健三郎,小柳奈緒美,稲毛章雄
  • Organizer: 信学総大
  • Place of Presentation: 岐阜大(B-1-194)
  • Year and Date: 2013-03-21
• [Presentation] Radiation Efficiency of an RFID Antenna by Using Q-factor (2012)
  • Author(s): 京村治孝,野口啓介
  • Organizer: IEEE Nagoya Chapter Midland Student Express 2012 Autumn
  • Place of Presentation: 金沢工大
  • Year and Date: 2012-11-09
• [Presentation] 積層パッチアンテナの等価回路に関する一検討 (2012)
  • Author(s): 渡邉拓也,野口啓介,別段信一,牧野滋,伊東健治,廣田哲夫
  • Organizer: 信学総大
  • Place of Presentation: 岡山大(B-1-135)
  • Year and Date: 2012-03-23
• [Presentation] 円偏波用積層方形MSAの非励振パッチ回転による広帯域化 (2011)
  • Author(s): 渡邉拓也,野口啓介,別段信一,牧野滋,伊東健治,廣田哲夫
  • Organizer: H23電気学会電子・情報・システム部門大会
  • Place of Presentation: 富山大(五福キャンパス,MC6-1)
  • Year and Date: 2011-09-08
• [Patent(Industrial Property Rights)] 円偏波特性を有するマイクロストリップアンテナ (2012)
  • Inventor(s): 野口啓介,別段信一,牧野滋,伊東 健治,廣田哲夫,渡辺拓也
  • Industrial Property Rights Holder: 野口啓介,別段信一,牧野滋,伊東 健治,廣田哲夫,渡辺拓也
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-47449
  • Filing Date: 2012-03-07
  • Overseas