本論文將探討窄頻的電力線通訊系統，其系統主要是以電力線作為傳遞網路信號的媒介。一開始先探討電力線通道特性及用來耦合信號至電力線上之耦合電路結構，尤其當電力線網路上的負載改變時，將導致阻抗不匹配，造成信號衰減。因此我們在耦合電路裡面加上驅動電路來降低輸出阻抗，提升信號強度。另外，我們在220伏插座上裝置一組具有帶通濾波器特性的跨相耦合電路，改善電力線通訊系統跨相時可能降低或甚至無法跨相傳輸的問題。最後，透過模擬家庭電力線網路環境，實際量測各種家電的雜訊，分析雜訊對系統的影響。

In this thesis, we studied the narrowband power line communication system. This system mainly utilizes the 60Hz power line as the medium to transmit network signals. In the beginning, we studied the power line channel characteristics and the coupling circuit structure, that was used to couple the signal to the power line. Impedance mismatch and signal attenuation may occur when the loading in the power line network changes. To this end we added a driver to the coupling circuit to reduce the output impedance, and hence enhance signal magnitude. In addition, we add the cross-phase coupling circuit with bandpass filter characteristics at the 220V socket. It was found that our cross-phase coupling circuit was able to improve the performance of the power line communication system when cross-phase transmission took place. Finally, we simulated the indoor power line network environment, measured several kinds of residential appliance noise and analyzed the influence on the power line communication system of the appliance noise.

致謝 I
摘要 III
Abstract IV
目錄 V
第一章 序論 1
1-1 研究動機 1
1-2 研究方法 2
第二章 電力線通信技術 3
2-1電力線通信標準規範 3
2-2電力線通訊傳輸方式 4
2-3 電力線傳輸特性 4
2-4 電力線負載分析 7
第三章 類比介面模組 9
3-1 耦合器設計原理 9
3-2 驅動電路設計原理 11
3-3 差動輸入系統 15
3-4 差動輸入結構分析 16
3-5 應用於差動輸入的類比介面模組 19
3-6 電路量測與分析 22
第四章 跨相耦合電路 27
4-1家庭供電環境分析 27
4-2 濾波器電路介紹 28
4-3 跨相耦合電路設計 31
第五章 家電雜訊特性 36
5-1 雜訊種類 37
5-2 雜訊量測方式與環境 38
5-3 實測結果 44
第六章 結論 55
參考文獻 56

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