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  1. 060 工学部
  2. 40 学会発表資料
  3. 04 電子情報通信学会
  1. 0 資料タイプ別
  2. 04 会議発表論文

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/10191/25753
e683d54a-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 ISAP_2006_2C2b-4.pdf (146.1 kB)
Item type 会議発表論文 / Conference Paper(1)
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
言語 en
タイトル A Gain Measurement in the Liquid Based on Friis Transmission Formula in the Near-Field Region
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_5794
タイプ conference paper
著者 Akagawa, Takuhei

× Akagawa, Takuhei

WEKO 169014

Akagawa, Takuhei

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Ishii, Nozomu

× Ishii, Nozomu

WEKO 169015

Ishii, Nozomu

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Sato, Ken-ichi

× Sato, Ken-ichi

WEKO 169016

Sato, Ken-ichi

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Hamada, Lira

× Hamada, Lira

WEKO 169017

Hamada, Lira

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Watanabe, Soichi

× Watanabe, Soichi

WEKO 169018

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
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/
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