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題 名 | Propagation Losses in a Concrete Building at 800 to 2900 MHz for Indoor Wireless Communications=一水泥建築物內無線通訊在頻率800至2900MHz之傳播損耗 |
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作 者 | 陳興義; 黃有智; | 書刊名 | 中國工程學刊 |
卷 期 | 20:1 1997.01[民86.01] |
頁 次 | 頁87-94 |
分類號 | 448.82 |
關鍵詞 | 幾何繞射理論; 傳播損耗; 損耗的介電質平面板; Geometric theory of diffraction; Propagation losses; Lossy dielectric plates; |
語 文 | 英文(English) |
英文摘要 | 本文利用幾何繞射理論法研究一建築物內部在頻率800至2900百萬赫芝間的傳播損 耗。此七層建築物由鋼筋水泥之樓板及牆所構成,建築物前後面有木門,樓層間有玻璃窗。 為了方便且在合理的計算範圍內,建築物僅保留第一層,其它各層樓均略去不計。在計算過 程中第一樓層的玻璃窗、木門、水泥樓板及牆分別由 66 塊有損耗的介電質平面板模擬之。 利用幾何繞射理論法在頻率 800 至 2900 百萬赫芝下所求得的傳播損耗介於 25 至 60dB 間。研究中亦發現在頻率 800 至 290 百萬赫芝間的傳播損耗隨著頻率增加而變大。傳播損 耗之模擬數據值僅在頻率 1500 百萬赫芝下與實驗量測值作比較。比較結果發現模擬數據值 與實驗量測值相當吻合。 of the first story of the building are modeled by 66 lossy dielectric plates. The propagation losses obtained by the GTD method are found in the range of 25 to 60 dB for frequencies varying from 800 to 2900 MHz. It is also found that the simulation results of propagation losses increase as the frequencies in crease from 800 to 2900 MHz. The simulation results of propagation losses are also compared with those obtained from the experimental measurements only at 1.5 GHz. It is found that the measurement data makes a good agreement with simulation results obtained by the GTD method. |
本系統中英文摘要資訊取自各篇刊載內容。