在本研究中，我們先建立了一個符合實際狀況的車體模型，並將模擬結果與參考文獻中的簡化模型相比較；發現當考慮圓極化天線時，需使用更為精緻的車體。另外，我們將對無線胎壓計天線進行實測並和模擬結果做比較，驗證了模擬的準確性，並且針對胎壓計天線在後方輪胎收不到訊號的情況提出了一個適合的解決方式。因為量測場地的缺乏，我們考慮使用縮小化模型進行天線的場型量測，並進行實際車體量測與縮小化模型之間的比較。在車用天線的場型測量上我們可以使用等比例縮小車輛之量測系統進行天線初步量測。

In this study, we establish a car model which better resembles a real car and compare with the simplified car model as a reference. When taking the circular polarization antenna into consideration, we need the refined car model in the simulation. Besides, TPMS antenna measurements are conducted and the results are compared with the simulation to verify the accuracy of our simulation. The result of the simulation shows that the signal cannot be received when TPMS antenna is mounted on the rear tires. Proper solution is suggested to alleviate this problem. Due to the limitation of the measurement environment, we consider using scale-sized car model for the measurement of the antenna radiation pattern. Also, we compare the radiation pattern in the scale-sized car model with that in the full-sized car model. For the measurement of the vehicular antenna, we find that using the scale-sized car model for the preliminary estimation of the antenna radiation pattern is feasible and practicable.

致 謝 i
摘　　要 iii
ABSTRACT iv
目　　錄 v
圖表目錄 vii
圖 vii
第一章　緒　　論 1
1.1 研究背景 1
1.2 論文大綱 2
第二章　車體模型之分析 3
2.1 車體模型之建立 3
2.2 模擬環境設定與結果 7
2.3 比較與討論 17
第三章　車體結構對胎壓計天線場型分析及實測 22
3.1 簡介 22
3.2 環境之模擬參數設定之結果與實際量測比較 24
3.3 模擬與實際量測之比較 32
3.4 結論 37
第四章　使用縮小模型分析車用天線之可行性 38
4.1 簡介 38
4.2 模擬環境參數設定與結果 39
4.3 結論 47
第五章　總結 48
參考文獻 49

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