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Imaging radio-frequency power distributions by an EBG absorber
https://doi.org/10.24517/00008345
https://doi.org/10.24517/00008345a8a18c01-ff98-4154-b3e5-112eae965af8
名前 / ファイル | ライセンス | アクション |
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TE-PR-YAGI-S-2306.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Imaging radio-frequency power distributions by an EBG absorber | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
ID登録 | ||||||
ID登録 | 10.24517/00008345 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Yagitani, Satoshi
× Yagitani, Satoshi× Katsuda, Keigo× Nojima, Masayuki× Yoshimura, Yoshiyuki× Sugiura, Hirokazu |
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書誌情報 |
IEICE Transactions on Communications 巻 E94-B, 号 8, p. 2306-2315, 発行日 2011-08-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0916-8516 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10826261 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1587/transcom.E94.B.2306 | |||||
出版者 | ||||||
出版者 | Institute of Electronics, Information and Communication Engineers | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A thin electromagnetic band-gap (EBG) absorber is employed to capture the 2-d image of radio-frequency (RF) power distribution. The EBG absorber consists of an array of mushroom unit cells formed on a thin dielectric substrate with a metal backplane, and lumped resistors interconnecting the surface patches of the mushrooms. Around the resonance frequency at which the EBG structure acts as a high-impedance surface, the RF power incident on the surface is absorbed by the lumped resistors which are matched with the incident wave impedance. By detecting directly the amounts of power consumed by the individual resistors, an "RF power imager" can be constructed which captures the 2-d distribution of the RF power illuminating the EBG surface, where polarization discrimination is possible. The resonance (i.e., absorption) frequency is made tunable by adding varactor diodes in parallel with the lumped resistors. The EBG absorber tunable in the frequency range of 700 MHz-2.7 GHz is designed and fabricated, and its performance is evaluated by an equivalent-circuit analysis, simulation and measurement. It is shown that the small resistance of the varactors have a considerable effect on the absorption performance. RF power distributions radiated from a dipole antenna are successfully measured by a matrix of sensitive power detectors installed on the backside of the absorber. Using such an RF power imager, the power distributions of even impulsive RF signals and/or noises can be captured and visualized in situ and in real-time, while the electromagnetic environment is almost undisturbed by the EBG absorber. © 2011 The Institute of Electronics, Information and Communication Engineers. | |||||
権利 | ||||||
権利情報 | Copyright (c) 2011 The Institute of Electronics, Information and Communication Engineers | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://japanlinkcenter.org/JST.JSTAGE/transcom/E94.B.2306 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.ieice.org/jpn/index.html |