講演抄録/キーワード |
講演名 |
2012-02-25 10:25
放送事業用連絡無線の放射特性に対する人体の姿勢の影響の検討 ○小郷直人・池田哲臣(NHK) |
抄録 |
(和) |
放送事業用連絡無線はVHF帯(165MHz),およびUHF帯(460MHz)を使用し,報道や番組制作における連絡手段として利用されている.本稿では,携帯型無線機をモデル化し,人体頭部近傍に無線機を設置したとき,人体の姿勢がアンテナ利得,放射パターンへ与える影響について数値人体モデルを用いて検討した.その結果,VHF帯では腕の考慮の有無,姿勢の違いにより放射パターンの差異が大きいが,UHF帯では腕の影響が支配的であり,姿勢の違いによる放射パターンの差異は小さいことがわかった. |
(英) |
The push-to-talk communication line for broadcasting services is used in the VHF band (165 MHz) and UHF band (460 MHz) in Japan. It is used for communication between staff during news gathering, television and radio program production, and so on. We designed a helical antenna with a metallic case as a handheld type transceiver and calculated the characteristics of the antenna with a numerical model of the human body. To investigate the effect of the human posture on the performance of the antenna, we calculated the antenna gain and radiation patterns when the antenna is in close proximity to the face. From these results, we found that the radiation patterns between with and without consideration of the arm and the human posture are significantly different in VHF band, however, the differences of the radiation patterns due to the arm are significant and the human posture are small in UHF band. |
キーワード |
(和) |
VHF帯 / UHF帯 / 連絡無線 / ヘリカルアンテナ / 数値人体モデル / 放射パターン / 人体の姿勢 / |
(英) |
VHF Band / UHF Band / Push-to-Talk Communication Line / Helical Antenna / Numerical Human-Body Model / Radiation Pattern / Human Posture / |
文献情報 |
映情学技報, vol. 36, no. 10, BCT2012-45, pp. 57-60, 2012年2月. |
資料番号 |
BCT2012-45 |
発行日 |
2012-02-17 (BCT) |
ISSN |
Print edition: ISSN 1342-6893 |
PDFダウンロード |
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