交通工具的發展便利了人們的生活，20世紀末現代化載具的問世，包括都市大眾運輸系統、飛機、汽車、火車與船舶等，縮短了人類行動的時間並且在日常生活中扮演著不可或缺的角色。近年來，隨著無線通訊的發展，載具受電磁波的影響亦日趨顯著。因此，本研究將以載具對電磁散射與輻射特性的影響為主軸分成兩個部份。在第一部份中，以船艦為例，利用HFSS軟體研究船體結構對於雷達散射截面積的影響。研究結果發現，船身採用內傾式結構可降低雷達截面積，將散射波反射至高空能減少敵方雷達偵測訊號，有效地實現船艦隱形技術。另一方面，以汽車為例，探討汽車內部品之天線效應造成的電磁波干擾，以量測汽車內、外部電磁場，並在未發動引擎，發動引擎且播放廣播等環境下進行。將本研究量測到的數據加以分析，研究結果發現當汽車引擎發動且播放廣播時，因車內部的電子元件產生天線效應的電磁輻射，其電磁場比未發動引擎時略為增加，因此汽車內部易造成天線結構的元件確實存在。

As the development of the transportation, it is convenient for people to go anywhere. At the end of 20th century, vehicles such as populace transportation system, airplanes, cars , trains and boats play an important role for human beings. It extremely saves us a lot of time in daily life. In recent years, as the development of the wireless communication, the effects of vehicles by electromagnetic waves become more pressing as well. This thesis presents an approach for effects of vehicles on scattering and radiating characteristics of electromagnetic waves and was divided into two parts. First, we use HFSS to simulate the ship’s RCS in order to comparing the reduction of the Radar Cross Section with various ship structure. The studies demonstrated that boats based on the inclined plane designed can reflect most of electromagnetic wave. Additionally, analyzing car electromagnetic measurements for electromagnetic interference which arises from antenna effect. According to the data we collected, it shows that the measurements in the car with the engine running is higher than one outside the car with the engine not running.

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