臺灣博碩士論文加值系統

高頻電磁場的生物效應雖然至今仍未有明確的定論，然而因無線通訊日益普及化，民眾暴露在高電磁場中的機會越來越多，也普遍關心此一議題，因此探討電磁場的生物效應也成了現今重要的研究課題。本研究利用自製的片型微帶天線(870MHz)和33dBm的連續波(Continuous wave)輸入產生高頻電磁場，以精密量測儀EMR-30進行量測，並利用XFDTD模擬軟體來估算大白鼠腦部之電磁場能量特定吸收比(Specific Absorption Rate, SAR)。本研究是以正常Wistar-Kyoto(WKY)大白鼠為實驗對象，並在大白鼠頭上裝設多功能生理紀錄電極，以擷取該大白鼠的腦電波(EEG)、肌電波(MEG)與心電波(ECG)訊號。實驗過程中，吾人使大白鼠暴露於天線所輻射出的高頻電磁場中，並藉由所量測到的多項數據，具以評估大白鼠在接受射頻暴露後，其對睡眠品質的影響。本研究內容包含觀察大白鼠在不同睡眠階段之時間比重、睡眠週期、擾動頻率等；並且分別記錄照射中與照射後的數據分析與比較。
本研究結果顯示，在接受射頻輻射暴露後，大白鼠之睡眠週期有延長的現象，且不同階段的時間比重也有所改變，顯示高頻射頻輻射可能對生物的睡眠品質有所影響。然而高頻電磁場之生物效應機制，至今尚未明朗化，未來仍需更多相關的研究，並做更深入的探討。

While the wireless-communication is getting more and more widespread, there still have several uncertainties about bioeffect of exposure to radio-frequency (RF) electromagnetic fields (EMF). However, understanding and assessment of risk to the issue become an important project and has drawn a lot of attention to general public. This study used 870MHz broadband rectangular antenna with continuous signal input (33dBm) to generate high power density EMF. Specific Absorption Rate (SAR), which is defined as the rate at which RF energy is absorbed per unit mass of biological tissue, was calculated by XFDTD. Wistar-Kyoto (WKY) rats were used in this study. A wireless multi-channel subcutaneous electrode system was used for implanted recording electroencephalographic (EEG) and electrocardiographic (ECG) signals. The retrieved data, including different phase times, distribution duration, sleep duration; interruption, before and after RF exposures were group collected, analyzed and compared.
From the results, it indicated that exposure to high power densities of EMF might have some influence to rats sleep. More rigorous experimental designs and bioeffect studies are need and encouraged for further exploration.

第一章 序論 6
第一節 研究背景(1.1) 6
第二節 相關研究回顧(1.2) 8
第二章 非游離輻射之國際規範 10
第一節 前言(2.1) 10
第二節 國際非游離輻射防護協會規範(2.2) 11
第三節 國內現行之規範與標準(2.3) 15
第三章 射頻電磁場量測 17
第一節 前言(3.1) 17
第二節 量測儀器(3.2) 17
第三節 射頻輻射發射天線(3.3) 21
第四節 訊號產生器與功率放大器(3.4) 24
第五節 量測方法(3.5) 27
一、量測條件(3.5.1) 27
二、量測位置(3.5.2) 27
三、量測注意事項(3.5.3) 28
第六節 量測結果與規範(3.6) 29
第四章 電磁波能量特定吸收比之估算 31
第一節 前言(4.1) 31
第二節 XFDTD軟體模擬(4.2) 32
一、基本原理(4.2.1) 32
二、模擬流程(4.2.2) 33
三、估算結果與規範(4.2.3) 36
第五章 動物實驗 37
第一節 前言(5.1) 37
第二節 理論基礎(5.2) 37
一、心率變異性與心臟自主神經功能(5.2.1) 37
二、心率變異性之頻域分析(5.2.2) 37
三、腦波之頻域分析(5.2.3) 38
第三節 動物用無線多軌記錄儀(5.3) 40
一、訊號收集(5.3.1) 40
二、手術方式(5.3.2) 40
第四節 動物實驗(5.4) 42
一、動物處理(5.4.1) 42
二、實驗架構(5.4.2) 42
三、實驗方法(5.4.3) 45
第五節 實驗結果與討論(5.5) 47
一、數據分析與大鼠睡眠判讀(5.5.1) 47
二、射頻照射下睡眠品質影響(5.5.2) 54
三、照射後短期和長期睡眠品質影響(5.5.3) 61
第六章 結論 68
前言(6.1) 68
實驗結果與心得(6.2) 68
未來研究與發展方向(6.3) 69
參考文獻 70

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