Broadband Planar Antenna Combining Monopole Element with Electromagnetic Bandgap
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- MATSUGATANI Kazuoki
- DENSO CORPORATION Research Laboratories
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- SAKAKIBARA Kunio
- Department of Computer Science and Engineering, Nagoya Institute Technology
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- KIKUMA Nobuyoshi
- Department of Computer Science and Engineering, Nagoya Institute Technology
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- HIRAYAMA Hiroshi
- Department of Computer Science and Engineering, Nagoya Institute Technology
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New structure of broadband planar antenna, combining monopole elements with electromagnetic bandgap (EBG) structures, is proposed. The antenna has a simple single layer structure and unique beam pattern. Antenna is fabricated on a surface of a single layer dielectric substrate and back side of the substrate is covered with metal layer. At the center of the substrate, an inverted L monopole strip is fabricated and on both sides of this monopole, EBG unit cells are placed. By tuning monopole length and EBG bandgap frequency, the monopole resonates even if metal layer exists close to the monopole radiator. Three types of EBG, one dimensional (1D), square two dimensional (2D) and hexagonal 2D, are tested. By combining monopole strip with hexagonal 2D-EBG, the bandwidth of prototype antenna, whose return loss is less than 10dB, is 840MHz in 5GHz band. To control beam patterns of antenna, parasitic elements are placed close to the monopole radiator and EBGs. These parasitic elements work as directors of quasi Yagi-Uda antenna and radiation gain at lower tilt angles is improved.
収録刊行物
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- IEICE Transactions on Electronics
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IEICE Transactions on Electronics E91-C (11), 1778-1785, 2008
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詳細情報 詳細情報について
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- CRID
- 1390001204375926656
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- NII論文ID
- 10026820128
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- NII書誌ID
- AA10826283
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- ISSN
- 17451353
- 09168524
- http://id.crossref.org/issn/09168524
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可