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A Gain Measurement in the Liquid Based on Friis Transmission Formula in the Near-Field Region
http://hdl.handle.net/10191/25753
http://hdl.handle.net/10191/25753e683d54a-1e7a-469f-a42d-a066e22d38ff
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ISAP_2006_2C2b-4.pdf (146.1 kB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||
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| 公開日 | 2014-02-25 | |||||
| タイトル | ||||||
| タイトル | A Gain Measurement in the Liquid Based on Friis Transmission Formula in the Near-Field Region | |||||
| タイトル | ||||||
| タイトル | A Gain Measurement in the Liquid Based on Friis Transmission Formula in the Near-Field Region | |||||
| 言語 | en | |||||
| 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_5794 | |||||
| 資源タイプ | conference paper | |||||
| 著者 |
Akagawa, Takuhei
× Akagawa, Takuhei× Ishii, Nozomu× Sato, Ken-ichi× Hamada, Lira× Watanabe, Soichi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In 300MHz-3GHz, a probe used in measuring SAR (Specific Absorption Rate) of the mobile communication device is usually calibrated by use of a rectangular waveguide filled with the tissue equivalent liquid. Above 3GHz, however, this conventional calibration has the possibility of inaccurate assessment because the diameter of the probe is comparable with the cross-sectional dimension of the waveguide. Therefore, an alternative calibration for the SAR probe based on another principle is required and is developed by the authors. In our proposed calibration, first, the gain of the reference antenna in the liquid is evaluated by use of two antenna method based on the Friis transmission formula in the conducting medium, and then the electric field radiated by the reference antenna is related to the output voltage of the SAR probe at a point in the liquid. However, the fields are significantly reduced in the liquid and the gain is impossible to be calibrated in the far-field region. To overcome this difficulty, the Friis transmission formula in the conducting medium is extended in the near-field region. In the paper some numerical and experimental results of estimated gain based on the Friis transmission formula in the near-field region are reported and the validity of the new formula is checked. | |||||
| 書誌情報 |
International Symposium on Antennas and Propagation en : International Symposium on Antennas and Propagation 巻 2006, p. 1-6, 発行日 2006-11 |
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| 出版者 | ||||||
| 出版者 | 電子情報通信学会 | |||||
| 権利 | ||||||
| 権利情報 | Copyright (C) 2006 IEICE | |||||
| 権利 | ||||||
| 権利情報 | 本文データは学協会の許諾に基づきISAP Archivesから複製したものである | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| 異版である | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://ap-s.ei.tuat.ac.jp/isapx/ | |||||
